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Getting Community Based Rehabilitation started in rural Botswana

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(Excerpted from Memories that Linger: My journey in the Word f Disability by Padmani Mendis)

The first group we visited wished to go together to the home of Ntchadi. Before we went to her home, the FWEs (Family Welfare Educators) told me that she had difficulty moving from place to place. She was about 10 years old. They said they wished they could do something for her. She had a very large head. She could not stand up because, they thought, she could not carry the weight of her head. I could see that she had hydrocephalus.

We visited Ntchadi’s home and were invited to sit on the bench outside the door. All the homes in the villages of Botswana were round mud huts. All the family members slept on mats which they would spread out on the floor at night. It was seldom that strangers were asked inside a home. We used the space available on the bench which was always to be found outside the door, while others stood by, leaning against the house or against a post. Ntchadi came close and sat on her haunches ready to join the conversation.

We talked with the mother about all her children until we came to Ntchadi. Her mother told us that Ntchadi wanted to go school. We asked Ntchadi whether she did and why, what she would do at school, did she have any friends and so on. She replied hesitantly and shyly. The mother added that Ntchadi stood at the fence to watch with a sad face as her brothers and sisters left for school. She would stand at the fence later when they were due back.

Ethel asked the group what we should do. “Shall we go and ask the school principal?” SSO (Social Servce Officer) Chele suggested. We asked Ntchadi and her mother whether they would like to do that. “But how can she go to school?” the mother asked. I stepped in say let’s go and ask the principal as Chele suggested.

It turned out the school was just opposite Ntchadi’s home. Chele went across, met the principal and asked him if he could meet us. We all walked across in a group to the school. The school was also made of small mud buildings. The principal, looking pleasant and stern at the same time, said first that he did not know that Ntchadi wanted to come to his school. He said now that he knew she did, of course she could.

At which Ntchadi’s face broke into a smile. SSO Joyce had questions. But how could she get here and back? What if she wanted to use the toilet? The principal replied that he had a wheelbarrow, and would ask children to take turns to fetch Ntchadi and take her back. And if she needed to use the toilet, someone will take her home in the wheelbarrow, he said.

There was a single neurosurgical specialist at the General Hospital in Gaborone, and a single physiotherapist. Where is the access to hospitals, specialised medical treatment and rehabilitation in countries such as these? Were these FWEs then delivering a cheap, low-cost service? Was this improving the quality of life of a child or not? Was this the medical model of rehabilitation? Or was it a developmental model? A rights-based model? Equal access to all or to the privileged few? To whatever questions critics had, this was CBR.

I heard that later the principal was a member of the Rehabilitation Committee Chele had helped their Kgotla or Village Chief to set up. Chele was happy with the interest the committee showed in their disabled people and with the support she got from them. The FWEs learned from this example that sometimes the solution lay within themselves.

Another group of FWEs took us to visit the home of three-year old Kealoboga. Ethel helped the FWEs assess her using Forms from the Manual. They found she could not sit by herself and she could not speak. They decided to teach the mother to use the Package on Play Activities to stimulate Kealoboga’s development. We went with Kealoboga and her mother to the village store and with difficulty got a cardboard box. Even a small box was a scarce resource in the village. The FWEs made some adjustments so that Kealoboga could sit in the box. They showed her mother how to speak to Kealoboga in the way that was shown in the Manual.

Not having the Manual in Setswana made it difficult for the families. Plans had already been made by Adelaide to have it translated. Funds were available, but the translation was taking a long time.

Family Welfare Educators

FWEs were the community health workers. They had a basic education, were full-time workers and came from the villages they worked in. The ones in our group of 15 were in the age group of perhaps 22 – 35 years. They were paid workers. After their field training was over, they told me they would visit the homes of the disabled members when they visited that part of the village for other reasons. In other words, they planned to integrate this task together with others they did in Primary Health Care.

And so we continued from day to day. When we needed a break for lunch we would find a bench to sit on quite close to a village store. FWEs and Ethel brought their own lunch. I would have an oil cake and a coke from the store. I disliked coke intensely, just for the brand name. But most often it was all the small store had. Home-made fresh oil cakes with coke which was probably from South Africa. That country was the source of all imports. Boy, did that white minority exploit their neighbours?

Over our lunch break the FWEs had lots of questions for me of a personal nature. One thing that seemed to fascinate many of them was my complexion. They commented on how smooth it was, and asked what I used. They were surprised when I said I used Nivea occasionally, just to prevent my skin from dryness. I was only forty years of age then. The wrinkles appeared three decades later. And the grey hairs took another decade.

The FWEs told me that most people living in Serowe were from the Bamangwato tribe. Each Motswana family had three homes. Now that they had regular jobs they themselves had to remain in Serowe all through the year. But some of their family when the rains came, had to spend time on their family lands and cultivate their fields. And then they went to the grazing areas or cattle posts to tend to their cattle. But every family was required to spend some time of the year in Serowe itself. They agreed with the chief that this was necessary to maintain tribal unity. They all spoke Setswana at home. At school they had studied in English.

Ethel Matiza

Ethel, always with a beaming smile on her face, always presenting an appearance of not having a care in the world. But there were times, and quite often too, that I caught in her eyes signs of desperation, of a deep unhappiness. In time I found out she had good reason for this. Ethel called herself a refugee from what was then Southern Rhodesia, now Zimbabwe. Southern Rhodesia had a white minority government dominating the black majority. You may remember Ian Smith the white prime minister? The black majority were being discriminated against, segregated and exploited as they were in South Africa.

The majority were struggling for their right to govern their country. Ethel told me this struggle was becoming increasingly violent. Her husband was actively involved in the struggle and his whole family was in danger of persecution. So much so her family believed it was safer for them to take refuge in Botswana. She was here with her parents and two children. Her husband continued to be a leader in the freedom movement. She was very afraid for him. This is the unhappiness, the desperation that I was seeing in her eyes. She told me that she thought their struggle would soon be over, but she still worried.

I heard early the following year that Zimbabwe finally gained its independence from Britain. It was of course world news. I was happy that Ethel could return home with her family and be safe with her husband. I knew at the same time that her going home will be a loss to the disabled people in Serowe, and indeed to Botswana. She was a dedicated worker with immense potential. She too, believed that CBR was the way forward.

The Serowe Hotel

The Serowe Hotel was situated on the Serowe-Palapye Road. The latter was then an important junction for both road and train travel. The distance between Palapye and Serowe was almost fifty kilometres. The road had been built only over ten years ago, so development alongside was recent. The Serowe Hotel was situated just inside the outer boundary of Serowe. From its appearance one would not have thought that it had been built within the last decade.

The hotel was a very small building. Two bedrooms for guests with a common bath and toilet, a small hall cum dining area, kitchen and a room for the manager. I was told that this had been built for travelling salesmen and the like. But in my three months, there were no other residential guests so I had the bath and toilet to myself.

No residential guests, but plenty of others. Every evening the hotel was filled with the male gender and loud noise. Much like the English pubs, they gathered here for beer, company and conversation. As the evening moved on many were intoxicated, plain drunk.

Given the way the hotel was used, after work I confined myself to my room. It was still spring and very cold. I had a single-bar electric heater in my room. Electricity was provided by the Council via generators which operated for two to three hours between 7 p.m. and 10 p.m. How long I could use my heater depended on how much diesel the Council had that day.

Before light fell, I was in the habit of sitting outside – one could not call it a garden, rather the space between the hotel and the road. This was to catch as much of the sun’s warmth as I could. To do this, I sat in a chair with a book, and while the shadow moved forward with the receding sun, I moved my chair and myself with the decreasing but still available sunlight. This made me a little bit warmer.

Serowe got its water from boreholes located around the village. Water was rationed and supplied to consumers from these sites. The hotel had its rationed supply stored in their own tank. As is to be expected in a supply chain, the water made available to me by the hotel had also to be rationed. Every morning and evening I was given a basin of water.

I requested that I be given less in the morning and more in the evening.

With the basin I was given in the evening, I had my bath. Nalin still asks me how I did it – and my reply is, there was no choice, I just had to. After a day out on dirt roads, walking from house to house in a village one returned hot and dusty. I used a small towel, soaked it, washed the dust off my body, applied soap, and washed that off again with the flannel soaked in clean water. Finally, with the water that was left, I washed my hair. Necessity is indeed the mother of invention.

Meals at the Serowe Hotel

For dinner every night I had a treat – steak. Cattle-rearing is the main occupation of the Motswana. The daily meal of the people was beef with porridge, and so was mine. Only the preparation was different. In the villages they usually cooked it all in one pot – the beef and the grain, like a stew. Sometimes the grain was cooked separately and made into porridge. The grain was either sorghum or millet which they grew in their fields.

The cattle were reared on their family grazing land. The porridge I had for breakfast. For dinner the hotel gave me a choice cut of beef made into a steak, served usually with porridge. Or as an occasional treat, potatoes when they had a supply from South Africa.

From Serowe to Brazzaville

While I was in Serowe I received an urgent message from WHO, Geneva that I should go to Brazzaville to participate as a resource at the Consultation of Directors of Rehabilitation Centres in the African Region. The consultation was to be held from October 8 -12. It was organised by the WHO African Regional Office (AFRO). Gunnel and I were asked to present two papers. One on “A Community-Based Approach to Rehabilitation” and the second on “Manpower Policies in Rehabilitation”. Because Gunnel could not attend, I presented both papers.

Before I came to Brazzaville I had to look up a map to find out where it was. I had actually not heard of it before. And yet the WHO Regional Office for Africa was located here. I found out that what we knew as the “Congo” is two countries. Brazzaville is the capital of what is the Republic of Congo. This had been the French part of the Congo.

The Belgian Congo, or Zaire, is now called the Democratic Republic of Congo. The map showed that while Brazzaville was on the north shore of the Congo River, Kinshasa the capital of the former Belgian Congo was on the south side. From Brazzaville on the north side, I could look across the river and see Kinshasa.

The Democratic Republic of Congo at this time had a military dictator called Mobuto Sese Seko. Economically, the Democratic Republic was doing badly and people were poor. The consultation kept me confined to the hotel with meetings in the evenings and many people to talk with. The little bit I saw of Brazzaville was on my way from and to the airport. What I saw indicated to me that it was a much-neglected city.

It was yet early days for CBR but the discussion and recommendations of this consultation could have a very positive impact for disabled people in Africa. The first output of the consultation was that CBR is the likely solution to meet the needs of disabled people. It called for disabled people, family members, neighbours and friends of disabled people, teachers, community leaders and local authorities to all participate actively in this approach; also, to utilise the principles of primary health care.

Second, it referred to the draft WHO Manual and stated that it will be made available to be adapted by countries for their own use. Third, it referred to the Guide for Policy Makers and Planners which had been recently drafted by Einar in Geneva and recommended its use for CBR planning. Fourth, it referred to the need to develop support and referral systems for CBR and called on rehabilitation institutions to take a leading role in this.

Finally, the consultation stressed the need for multi-purpose or mid-level rehabilitation workers to support CBR. I shall be coming back to the mid-level worker many times later in my journey. For now, I was happy that the need for such a professional was expressed at this important forum; let me say for the first time since WHO introduced CBR.

This consultation led to a workshop in CBR being held in Serowe the following year. I returned to Botswana to facilitate that workshop with Gunnel



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Ramadan 2026: Fasting hours around the world

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The Muslim holy month of Ramadan is set to begin on February 18 or 19, depending on the sighting of the crescent moon.

During the month, which lasts 29 or 30 days, Muslims observing the fast will refrain from eating and drinking from dawn to dusk, typically for a period of 12 to 15 hours, depending on their location.

Muslims believe Ramadan is the month when the first verses of the Quran were revealed to the Prophet Muhammad more than 1,400 years ago.

The fast entails abstinence from eating, drinking, smoking and sexual relations during daylight hours to achieve greater “taqwa”, or consciousness of God.

Why does Ramadan start on different dates every year?

Ramadan begins 10 to 12 days earlier each year. This is because the Islamic calendar is based on the lunar Hijri calendar, with months that are 29 or 30 days long.

For nearly 90 percent of the world’s population living in the Northern Hemisphere, the number of fasting hours will be a bit shorter this year and will continue to decrease until 2031, when Ramadan will encompass the winter solstice, the shortest day of the year.

For fasting Muslims living south of the equator, the number of fasting hours will be longer than last year.

Because the lunar year is shorter than the solar year by 11 days, Ramadan will be observed twice in the year 2030 – first beginning on January 5 and then starting on December 26.

INTERACTIVE - Ramadan 2026 33 year fasting cycle-1770821237
(Al Jazeera)

Fasting hours around the world

The number of daylight hours varies across the world.

Since it is winter in the Northern Hemisphere, this Ramadan, people living there will have the shortest fasts, lasting about 12 to 13 hours on the first day, with the duration increasing throughout the month.

People in southern countries like Chile, New Zealand, and South Africa will have the longest fasts, lasting about 14 to 15 hours on the first day. However, the number of fasting hours will decrease throughout the month.

INTERACTIVE - Fasting hours around the world-1770821240

[Aljazeera]

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The education crossroads:Liberating Sri Lankan classroom and moving ahead

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Education reforms have triggered a national debate, and it is time to shift our focus from the mantra of memorising facts to mastering the art of thinking as an educational tool for the children of our land: the glorious future of Sri Lanka.

The 2026 National Education Reform Agenda is an ambitious attempt to transform a century-old colonial relic of rote-learning into a modern, competency-based system. Yet for all that, as the headlines oscillate between the “smooth rollout” of Grade 01 reforms and the “suspension of Grade 06 modules,” due to various mishaps, a deeper question remains: Do we truly and clearly understand how a human being learns?

Education is ever so often mistaken for the volume of facts a student can carry in his or her head until the day of an examination. In Sri Lanka the “Scholarship Exam” (Grade 05) and the O-Level/A-Level hurdles have created a culture where the brain is treated as a computer hard drive that stores data, rather than a superbly competent processor of information.

However, neuroscience and global success stories clearly project a different perspective. To reform our schools, we must first understand the journey of the human mind, from the first breath of infancy to the complex thresholds of adulthood.

The Architecture of the Early Mind: Infancy to Age 05

The journey begins not with a textbook, but with, in tennis jargon, a “serve and return” interaction. When a little infant babbles, and a parent responds with a smile or a word or a sentence, neural connections are forged at a rate of over one million per second. This is the foundation of cognitive architecture, the basis of learning. The baby learns that the parent is responsive to his or her antics and it is stored in his or her brain.

In Scandinavian countries like Finland and Norway, globally recognised and appreciated for their fantastic educational facilities, formal schooling does not even begin until age seven. Instead, the early years are dedicated to play-based learning. One might ask why? It is because neuroscience has clearly shown that play is the “work” of the child. Through play, children develop executive functions, responsiveness, impulse control, working memory, and mental flexibility.

In Sri Lanka, we often rush like the blazes on earth to put a pencil in the hand of a three-year-old, and then firmly demanding the child writes the alphabet. Contrast this with the United Kingdom’s “Birth to 5 Matters” framework. That initiative prioritises “self-regulation”, the ability to manage emotions and focus. A child who can regulate their emotions is a child who can eventually solve a quadratic equation. However, a child who is forced to memorise before they can play, often develops “school burnout” even before they hit puberty.

The Primary Years: Discovery vs. Dictation

As children move into the primary years (ages 06 to 12), the brain’s “neuroplasticity” is at its peak. Neuroplasticity refers to the malleability of the human brain. It is the brain’s ability to physically rewire its neural pathways in response to new information or the environment. This is the window where the “how” of learning becomes a lot more important than the “what” that the child should learn.

Singapore is often ranked number one in the Programme for International Student Assessment (PISA) scores. It is a worldwide study conducted by the Organisation for Economic Co-operation and Development (OECD) that measures the scholastic performance of 15-year-old students in mathematics, science, and reading. It is considered to be the gold standard for measuring “education” because it does not test whether students can remember facts. Instead, it tests whether they can apply what they have learned to solve real-world problems; a truism that perfectly aligns with the argument that memorisation is not true or even valuable education. Singapore has moved away from its old reputation for “pressure-cooker” education. Their current mantra is “Teach Less, Learn More.” They have reduced the syllabus to give teachers room to facilitate inquiry. They use the “Concrete-Pictorial-Abstract” approach to mathematics, ensuring children understand the logic of numbers before they are asked to memorise formulae.

In Japan, the primary curriculum emphasises Moral Education (dotoku) and Special Activities (tokkatsu). Children learn to clean their own classrooms and serve lunch. This is not just about performing routine chores; it really is as far as you can get away from it. It is about learning collaboration and social responsibility. The Japanese are wise enough to understand that even an absolutely brilliant scientist who cannot work in a team is a liability to society.

In Sri Lanka, the current debate over the 2026 reforms centres on the “ABCDE” framework: Attendance, Belongingness, Cleanliness, Discipline, and English. While these are noble goals, we must be careful not to turn “Belongingness” into just another checkbox. True learning in the primary years happens when a child feels safe enough to ask “Why?” without the fear of being told “Because it is in the syllabus” or, in extreme cases, “It is not your job to question it.” Those who perpetrate such remarks need to have their heads examined, because in the developed world, the word “Why” is considered to be a very powerful expression, as it demands answers that involve human reasoning.

The Adolescent Brain: The Search for Meaning

Between ages 12 and 18, the brain undergoes a massive refashioning or “pruning” process. The prefrontal cortex of the human brain, the seat of reasoning, is still under construction. This is why teenagers are often impulsive but also capable of profound idealism. However, with prudent and gentle guiding, the very same prefrontal cortex can be stimulated to reach much higher levels of reasoning.

The USA and UK models, despite their flaws, have pioneered “Project-Based Learning” (PBL). Instead of sitting for a history lecture, students might be tasked with creating a documentary or debating a mock trial. This forces them to use 21st-century skills, like critical thinking, communication, and digital literacy. For example, memorising the date of the Battle of Danture is a low-level cognitive task. Google can do it in 0.02 seconds or less. However, analysing why the battle was fought, and its impact on modern Sri Lankan identity, is a high-level cognitive task. The Battle of Danture in 1594 is one of the most significant military victories in Sri Lankan history. It was a decisive clash between the forces of the Kingdom of Kandy, led by King Vimaladharmasuriya 1, and the Portuguese Empire, led by Captain-General Pedro Lopes de Sousa. It proved that a smaller but highly motivated force with a deep understanding of its environment could defeat a globally dominant superpower. It ensured that the Kingdom of Kandy remained independent for another 221 years, until 1815. Without this victory, Sri Lanka might have become a full Portuguese colony much earlier. Children who are guided to appreciate the underlying reasons for the victory will remember it and appreciate it forever. Education must move from the “What” to the “So What about it?

The Great Fallacy: Why Memorisation is Not Education

The most dangerous myth in Sri Lankan education is that a “good memory” equals a “good education.” A good memory that remembers information is a good thing. However, it is vital to come to terms with the concept that understanding allows children to link concepts, reason, and solve problems. Memorisation alone just results in superficial learning that does not last.

Neuroscience shows that when we learn through rote recall, the information is stored in “silos.” It stays put in a store but cannot be applied to new contexts. However, when we learn through understanding, we build a web of associations, an omnipotent ability to apply it to many a variegated circumstance.

Interestingly, a hybrid approach exists in some countries. In East Asian systems, as found in South Korea and China, “repetitive practice” is often used, not for mindless rote, but to achieve “fluency.” Just as a pianist practices scales to eventually play a concerto with soul sounds incorporated into it, a student might practice basic arithmetic to free up “working memory” for complex physics. The key is that the repetition must lead to a “deep” approach, not a superficial or “surface” one.

Some Suggestions for Sri Lanka’s Reform Initiatives

The “hullabaloo” in Sri Lanka regarding the 2026 reforms is, in many ways, a healthy sign. It shows that the country cares. That is a very good thing. However, the critics have valid points.

* The Digital Divide: Moving towards “digital integration” is progressive, but if the burden of buying digital tablets and computers falls on parents in rural villages, we are only deepening the inequality and iniquity gap. It is our responsibility to ensure that no child is left behind, especially because of poverty. Who knows? That child might turn out to be the greatest scientist of all time.

* Teacher Empowerment: You cannot have “learner-centred education” without “independent-thinking teachers.” If our teachers are treated as “cogs in a machine” following rigid manuals from the National Institute of Education (NIE), the students will never learn to think for themselves. We need to train teachers to be the stars of guidance. Mistakes do not require punishments; they simply require gentle corrections.

* Breadth vs. Depth: The current reform’s tendency to increase the number of “essential subjects”, even up to 15 in some modules, ever so clearly risks overwhelming the cognitive and neural capacities of students. The result would be an “academic burnout.” We should follow the Scandinavian model of depth over breadth: mastering a few things deeply is much better than skimming the surface of many.

The Road to Adulthood

By the time a young adult reaches 21, his or her brain is almost fully formed. The goal of the previous 20 years should not have been to fill a “vessel” with facts, but to “kindle a fire” of curiosity.

The most successful adults in the 2026 global economy or science are not those who can recite the periodic table from memory. They are those who possess grit, persistence, adaptability, reasoning, and empathy. These are “soft skills” that are actually the hardest to teach. More importantly, they are the ones that cannot be tested in a three-hour hall examination with a pen and paper.

A personal addendum

As a Consultant Paediatrician with over half a century of experience treating children, including kids struggling with physical ailments as well as those enduring mental health crises in many areas of our Motherland, I have seen the invisible scars of our education system. My work has often been the unintended ‘landing pad’ for students broken by the relentless stresses of rote-heavy curricula and the rigid, unforgiving and even violently exhibited expectations of teachers. We are currently operating a system that prioritises the ‘average’ while failing the individual. This is a catastrophe that needs to be addressed.

In addition, and most critically, we lack a formal mechanism to identify and nurture our “intellectually gifted” children. Unlike Singapore’s dedicated Gifted Education Programme (GEP), which identifies and provides specialised care for high-potential learners from a very young age, our system leaves these bright minds to wither in the boredom of standard classrooms or, worse, treats their brilliance as a behavioural problem to be suppressed. Please believe me, we do have equivalent numbers of gifted child intellectuals as any other nation on Mother Earth. They need to be found and carefully nurtured, even with kid gloves at times.

All these concerns really break my heart as I am a humble product of a fantastic free education system that nurtured me all those years ago. This Motherland of mine gave me everything that I have today, and I have never forgotten that. It is the main reason why I have elected to remain and work in this country, despite many opportunities offered to me from many other realms. I decided to write this piece in a supposedly valiant effort to anticipate that saner counsel would prevail finally, and all the children of tomorrow will be provided with the very same facilities that were afforded to me, right throughout my career. Ever so sadly, the current system falls ever so far from it.

Conclusion: A Fervent Call to Action

If we want Sri Lanka to thrive, we must stop asking our children, “What did you learn today?” and start asking, “What did you learn to question today?

Education reform is not just about changing textbooks or introducing modules. It is, very definitely, about changing our national mindset. We must learn to equally value the artist as much as the doctor, and the critical thinker as much as the top scorer in exams. Let us look to the world, to the play of the Finns, the discipline of the Japanese, and the inquiry of the British, and learn from them. But, and this is a BIG BUT…, let us build a system that is uniquely Sri Lankan. We need a system that makes absolutely sure that our children enjoy learning. We must ensure that it is one where every child, without leaving even one of them behind, from the cradle to the graduation cap, is seen not as a memory bank, but as a mind waiting to be set free.

by Dr B. J. C. Perera
MBBS(Cey), DCH(Cey), DCH(Eng), MD(Paed), MRCP(UK), FRCP(Edin), FRCP(Lond), FRCPCH(UK), FSLCPaed, FCCP, Hony. FRCPCH(UK), Hony. FCGP(SL)
Specialist Consultant Paediatrician and Honorary Senior Fellow, Postgraduate Institute of Medicine, University of Colombo, Sri Lanka.
Joint Editor, Sri Lanka
Journal of Child Health]
Section Editor, Ceylon Medical Journal

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Giants in our backyard: Why Sri Lanka’s Blue Whales matter to the world

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Whales in the seas off Sri Lanka

Standing on the southern tip of the island at Dondra Head, where the Indian Ocean stretches endlessly in every direction, it is difficult to imagine that beneath those restless blue waves lies one of the greatest wildlife spectacles on Earth.

Yet, according to Dr. Ranil Nanayakkara, Sri Lanka today is not just another tropical island with pretty beaches – it is one of the best places in the world to see blue whales, the largest animals ever to have lived on this planet.

“The waters around Sri Lanka are particularly good for blue whales due to a unique combination of geography and oceanographic conditions,” Dr. Nanayakkara told The Island. “We have a reliable and rich food source, and most importantly, a unique, year-round resident population.”

In a world where blue whales usually migrate thousands of kilometres between polar feeding grounds and tropical breeding areas, Sri Lanka offers something extraordinary – a non-migratory population of pygmy blue whales (Balaenoptera musculus indica) that stay around the island throughout the year. Instead of travelling to Antarctica, these giants simply shift their feeding grounds around the island, moving between the south and east coasts with the monsoons.

The secret lies beneath the surface. Seasonal monsoonal currents trigger upwelling of cold, nutrient-rich water, which fuels massive blooms of phytoplankton. This, in turn, supports dense swarms of Sergestidae shrimps – tiny creatures that form the primary diet of Sri Lanka’s blue whales.

“Blue whales require dense aggregations of these shrimps to meet their massive energy needs,” Dr. Nanayakkara explained. “And the waters around Dondra Head and Trincomalee provide exactly that.”

Adding to this natural advantage is Sri Lanka’s narrow continental shelf. The seabed drops sharply into deep oceanic canyons just a few kilometres from the shore. This allows whales to feed in deep waters while remaining close enough to land to be observed from places like Mirissa and Trincomalee – a rare phenomenon anywhere in the world.

Dr. Nanayakkara’s journey into marine research began not in a laboratory, but in front of a television screen. As a child, he was captivated by the documentary Whales Weep Not by James R. Donaldson III – the first visual documentation of sperm and blue whales in Sri Lankan waters.

“That documentary planted the seed,” he recalled. “But what truly set my path was my first encounter with a sperm whale off Trincomalee. Seeing that animal surface just metres away was humbling. It made me realise that despite decades of conflict on land, Sri Lanka harbours globally significant marine treasures.”

Since then, his work has focused on cetaceans – from blue whales and sperm whales to tropical killer whales and elusive beaked whales. What continues to inspire him is both the scientific mystery and the human connection.

“These blue whales do not follow typical migration patterns. Their life cycles, communication and adaptability are still not fully understood,” he said. “And at the same time, seeing the awe in people’s eyes during whale watching trips reminds me why this work matters.”

Whale watching has become one of Sri Lanka’s fastest-growing tourism industries. On the south coast alone, thousands of tourists head out to sea every year in search of a glimpse of the giants. But Dr. Nanayakkara warned that without strict regulation, this boom could become a curse.

“We already have good guidelines – vessels must stay at least 100 metres away and maintain slow speeds,” he noted. “The problem is enforcement.”

Speaking to The Island, he stressed that Sri Lanka stands at a critical crossroads. “We can either become a global model for responsible ocean stewardship, or we can allow short-term economic interests to erode one of the most extraordinary marine ecosystems on the planet. The choice we make today will determine whether these giants continue to swim in our waters tomorrow.”

Beyond tourism, a far more dangerous threat looms over Sri Lanka’s whales – commercial shipping traffic. The main east-west shipping lanes pass directly through key blue whale habitats off the southern coast.

“The science is very clear,” Dr. Nanayakkara told The Island. “If we move the shipping lanes just 15 nautical miles south, we can reduce the risk of collisions by up to 95 percent.”

Such a move, however, requires political will and international cooperation through bodies like the International Maritime Organization and the International Whaling Commission.

“Ships travelling faster than 14 knots are far more likely to cause fatal injuries,” he added. “Reducing speeds to 10 knots in high-risk areas can cut fatal strikes by up to 90 percent. This is not guesswork – it is solid science.”

To most people, whales are simply majestic animals. But in ecological terms, they are far more than that – they are engineers of the ocean system itself.

Through a process known as the “whale pump”, whales bring nutrients from deep waters to the surface through their faeces, fertilising phytoplankton. These microscopic plants absorb vast amounts of carbon dioxide, making whales indirect allies in the fight against climate change.

“When whales die and sink, they take all that carbon with them to the deep sea,” Dr. Nanayakkara said. “They literally lock carbon away for centuries.”

Dr. Ranil Nanayakkara

Even in death, whales create life. “Whale falls” – carcasses on the ocean floor – support unique deep-sea communities for decades.

“Protecting whales is not just about saving a species,” he said. “It is about protecting the ocean’s ability to function as a life-support system for the planet.”

For Dr. Nanayakkara, whales are not abstract data points – they are individuals with personalities and histories.

One of his most memorable encounters was with a female sperm whale nicknamed “Jaw”, missing part of her lower jaw.

“She surfaced right beside our boat, her massive eye level with mine,” he recalled. “In that moment, the line between observer and observed blurred. It was a reminder that these are sentient beings, not just research subjects.”

Another was with a tropical killer whale matriarch called “Notch”, who surfaced with her calf after a hunt.

“It felt like she was showing her offspring to us,” he said softly. “There was pride in her movement. It was extraordinary.”

Looking ahead, Dr. Nanayakkara envisions Sri Lanka as a global leader in a sustainable blue economy – where conservation and development go hand in hand.

“The ultimate goal is shared stewardship,” he told The Island. “When fishermen see healthy reefs as future income, and tour operators see protected whales as their greatest asset, conservation becomes everyone’s business.”

In the end, Sri Lanka’s greatest natural inheritance may not be its forests or mountains, but the silent giants gliding through its surrounding seas.

“Our ocean health is our greatest asset,” Dr. Nanayakkara said in conclusion. “If we protect it wisely, these whales will not just survive – they will define Sri Lanka’s place in the world.”

By Ifham Nizam

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