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When the water rises: Climate change and the future of Yala’s Mugger Crocodiles

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Mugger Crocodile

In February and March 2025, visitors to Yala National Park stood in disbelief as torrents of brown water surged across once-dry tracks, submerging grasslands and turning familiar terrains into murky lakes. Roads disappeared, jeeps stalled, and for days, one of the most celebrated wildlife reserves in the world remained flooded. But while the tourists could leave, much of Yala’s wildlife—especially its ancient predator, the mugger crocodile—had no escape.

Yala, nestled in Sri Lanka’s southeastern dry zone, is not just another national park. It is one of the last great sanctuaries for the Crocodylus palustris, or mugger crocodile. “Yala has perhaps the densest wild population of mugger crocodiles anywhere in the world,” says Dr. Anslem de Silva, Sri Lanka’s foremost herpetologist and a globally respected authority on reptile conservation. “It is a crown jewel in mugger conservation.”

But today, that crown is under threat—not from poaching or pollution, but from the climate itself.

A Reptile Shaped by Water—and Now Endangered by It

The mugger crocodile is one of South Asia’s most resilient predators. With a fossil history stretching back millions of years, it has outlived dinosaurs, survived continental shifts, and adapted to changing environments. But the mugger’s success has always depended on the predictability of water: seasonal wetlands to hunt, banks to nest, and sunlit lagoons to bask. That balance is now unraveling.

“When people see floods, they assume it benefits crocodiles,” Dr. de Silva explains. “But timing is everything. Floods during the dry season can destroy eggs, displace young, and alter the breeding cycle.”

Crocodiles in Yala typically breed between December and March, with females digging nests in sandy, elevated spots along tank and riverbanks. These clutches—often containing 20 to 30 eggs—require specific humidity and temperature conditions to incubate successfully. When heavy rains strike suddenly and raise water levels, these carefully chosen nesting sites are submerged.

“The flooding in early 2025 likely destroyed dozens, maybe hundreds, of nests,” says Dr. de Silva. “That’s an entire generation gone.”

Unlike some reptiles or amphibians, mugger crocodiles typically lay one clutch per season. If that fails, there is no second attempt until the following year. The long-term impact of even a single season of mass nest failure is significant—especially when such floods are becoming more frequent.

A Park Under Pressure

Yala National Park has always been shaped by the monsoon. Seasonal rains replenish its tanks and reservoirs, sustain its grasslands, and dictate the movements of animals. But climate change is altering that rhythm. Rains are becoming erratic, shorter, and more intense. Dry spells last longer, then end abruptly in flash floods.

“The climate doesn’t behave like it used to,” says Dr. de Silva. “We’re seeing long droughts followed by short, violent floods. This puts enormous stress on species that rely on ecological predictability.”

It’s not just crocodiles. Peacocks, elephants, leopards, and dozens of endemic species are having to adapt—often unsuccessfully—to changes in water availability. But crocodiles are particularly vulnerable because their reproductive success is so tightly tied to environmental cues.

In Yala’s Block I, one of the most visited areas of the park, many nesting sites traditionally used by crocodiles have been rendered unusable. Either they’re too dry to dig in during prolonged droughts, or they’re too low-lying and now flood-prone during the breeding season.

Dr. de Silva and his colleagues have observed these shifts over years. “I’ve seen nesting sites that were once productive for decades now sit empty. Either the crocodiles have moved—or they’ve stopped nesting altogether in those areas.”

Not Just Eggs

Floods don’t only endanger eggs. Hatchlings and juveniles are highly vulnerable to changing hydrological conditions. Strong currents can sweep them away from their mothers and traditional basking spots. Floodwaters can also introduce pollutants and pathogens, especially if upstream water sources carry sewage or agricultural runoff.

Dr. de Silva notes, “In some flood events, we’ve seen juvenile mortality increase sharply, not just from drowning but from disease and predation as their habitats are disturbed.”

There are cascading effects too. Fish stocks—the primary food source for crocodiles—may be displaced or reduced following floods. Amphibian populations, which rely on stable pools to breed, also fluctuate wildly, affecting food chains.

Moreover, increased encounters with humans become a concern. When crocodiles are displaced by floods, they often turn up in agricultural canals, village tanks, or even roads. This not only risks their lives but also fuels fear and conflict in local communities.

Anselm

Climate Science and Crocodile Survival

Scientific studies have confirmed that Sri Lanka’s dry zone is experiencing increased climate variability. According to the Climate Change Secretariat of Sri Lanka, mean temperatures in the country have increased by 0.8°C over the past century, while rainfall has become more erratic. The frequency of floods and droughts is projected to increase in the coming decades, especially in the southeastern regions like Yala.

What does this mean for the mugger crocodile?

“It means extinction pressure—slow, creeping, but real,” says Dr. de Silva. “These animals have persisted through the ages, but their survival depends on stable reproductive cycles. Climate change breaks that.”

In response, conservationists are calling for adaptive strategies. Dr. de Silva advocates for detailed monitoring of nest success rates, mapping of climate-resilient nesting grounds, and even the creation of elevated artificial nesting banks in flood-prone areas.

“In extreme years, we might even need to consider conservation hatcheries—not as a permanent solution, but as an emergency measure,” he says.

He also emphasises community education. “Local people need to be part of the solution. If they understand the role crocodiles play in wetland ecosystems—as regulators of fish populations, as scavengers—they are more likely to protect them.”

Yala National Park

Lessons from a Flooded Future

The flooding of Yala in early 2025 was not an anomaly. It was a harbinger of what lies ahead in a warming world. The scenes of submerged forest tracks and stranded animals are part of a new reality that conservationists must grapple with.

For the mugger crocodile—an ancient survivor now battling modern threats—the future is uncertain. But Dr. de Silva remains cautiously hopeful.

“These are incredibly resilient animals,” he says. “If we give them the space, the protection, and the right conditions, they will adapt. But we must act now. Nature won’t wait.”

What Can Be Done?

Monitor Nesting Sites

Regular mapping of nesting grounds to track success rates and climate impacts.

Artificial Nesting Mounds

Elevated, flood-resistant mounds to ensure egg survival during wet years.

Seasonal Water Management

Using sluice gates in reservoirs to manage water levels during breeding months.

Conservation Hatcheries

Controlled hatching in years of extreme climate events, with hatchlings released into the wild.

Community Education

Involving villagers and park guides in conservation through awareness programs.

Mugger Snapshot

Scientific name: Crocodylus palustris

IUCN Status: Vulnerable

Breeding season: December to March

Clutch size: 20–30 eggs

Habitat: Freshwater lakes, tanks, rivers, and marshes

Range: India, Sri Lanka, Nepal, Iran, Pakistan.

by Ifham Nizam



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The silent crisis: A humanitarian plea for Sri Lankan healthcare

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As a clinician whose journey in medicine began from the lecture halls of the Colombo Medical Faculty, in 1965, and then matured through securing the coveted MBBS(Ceylon) degree in 1970, followed by a further kaleidoscopic journey down the specialist corridors, from 1978 onwards, I have witnessed the remarkable evolution of healthcare in Sri Lanka. I have seen the admirable resolve of a nation that managed to offer free healthcare, at the point of delivery, to all its citizens, and I have seen many a battle being fought to bring state-of-the-art treatments for the benefit of sick patients, even despite some of the initial scepticism on the part of some.

However, as we now try to navigate the turbulent waters of 2026, I find myself compelled to speak even impulsively. This is not a mission of fault-finding, or a manifestation of a desire to “ruffle feathers,” for the sake of fanning a fire. Rather, it is a reflection offered in good faith, born from the “Spirit of an Enthusiast” who has seen both the brickbats as well as the accolades bestowed on our profession. My goal is relatively simple: which is to bring to light the silent, sometimes extremely difficult, situations faced by patients, doctors, and relatives, and to urge for a compassionate and collective solution to a crisis that threatens the very foundation of the care we provide.

The Generic Gamble: The Lament of the Ward

The cornerstone of our health service has always been the provision of free medicine to all who come to our state medical facilities. For decades, the “generic-only” policy served as a vital safety net. But, today, that net is fraying, not just at the edges but virtually as a whole. In our hospital wards, the clinician’s heart sinks when a patient fails to respond to a standard course of treatment.

We are increasingly haunted by the fancy terminology, “Quality Failure”, as alerts on medicinal drugs. When an anti-infective medicine lacks the potency to clear an infection, or when a poor-quality generic drug fails to stabilise the circulation of a little gasping child who is fighting for his life, the treating doctor is left in a state of agonising clinical despair. It is a profound lament to realise that while the medicine is “available” on the shelf, its efficacy remains as a question mark. The “free health service” becomes tragically and obstinately expensive when it leads to prolonged hospital stays, complications, or, in the worst cases, even the loss of a life that could have been saved with a more reliable formulation of an essential medicine. We must acknowledge that a cheap drug that does not work is the most expensive drug of all. For the doctor, this turns every prescription into a calculated risk, a far cry from the “best possible care” we were trained to deliver. These situations are certainly not the whims of fancy of a wandering mind, but real-time occurrences in our health service.

The Vanishing Innovators and the Small Market Reality

In the private sector, the situation is equally dire, though the causes are different. We must face a hard truth: Sri Lanka is a comparatively small market in the global pharmaceutical landscape. For the world’s leading manufacturers of proven, branded medicines and vaccines, our island is often a small, rather peripheral, consideration.

When the National Medicines Regulatory Authority (NMRA) fixes prices at levels that do not even cover the “Cost, Insurance, and Freight” (CIF) value, let alone the massive research and development costs of these innovator drugs, these companies inevitably reach a breaking point. They do not “bail out” through a lack of compassion, but do so even reluctantly sometimes, because they simply cannot sustain their operations at a loss.

Over the last few years, we have watched in silence as reputable international companies have closed their shops and departed our shores. With them have gone some of the vaccines that provided a lifetime of immunity, and the so-called branded drugs that offered predictable, life-saving results. When these “Gold Standards” vanish, the void is often filled by products from regions with lower regulatory oversight, leaving the patient with no choice but to settle for what is available or just what is left.

The Shadow Economy of “Baggage Medicines”

Perhaps the most heartbreaking symptom of this broken system is the rise of the “baggage medicine” market. Walk into any major private hospital today, and you will hear the whispered conversations of relatives trying to source drugs from abroad, in a clandestine manner.

Reputed branded drugs are being brought into the country in the suitcases of international travellers. While these relatives are acting out of pure, desperate love, the medical risks are astronomical. These medicines sometimes bypass the essential “Cold Chain” requirements for temperature-sensitive products like insulin or specialised vaccines. There is no way to verify if the drug in the suitcase is genuinely effective, or if it has been rendered inert by the heat of a cargo hold of an aircraft.

As a physician, it is an agonising dilemma: do I administer a drug brought in a suitcase to save a life, knowing very well that I cannot certify its safety? We are forcing our citizens into a shadow economy of survival, stripped of the protections a modern regulatory body should provide.

The Unavoidable Storm: Geopolitical Shocks

Adding to this internal struggle is the current unrest in the Middle East. As of March 2026, the escalation of conflict has sent shockwaves through global supply chains. With major maritime routes, like the Strait of Hormuz effectively halted and air cargo capacity from Middle Eastern hubs, like Dubai, slashed by over 50%, the cost of transporting medicine has become a moving target.

* Skyrocketing Logistics: Freight surcharges and war-risk insurance premiums have added “unavoidable costs” that simply cannot be absorbed by local importers under a rigid price cap.

* Delayed Transport is delayed healing:

Shipments rerouted around the Cape of Good Hope add weeks to delivery times, leading to stockouts of even the most basic medical consumables.

These are global forces beyond our control, but our regulatory response must be agile enough to recognise them. If we ignore these external costs, we are not just controlling prices; we are ensuring that the medicine never arrives at all.

The Rights of Patients Seeking Private Healthcare

Whatever the reason for patients seeking private healthcare, all of us have an abiding duty to respect their wishes. It is their unquestionable right to have access to drugs and vaccines of proven high quality, if they decide to go into Private Fee-levying Healthcare. This is particularly relevant to the immunisation of children. Sometimes the child receives the first dose of a given vaccine in a Private Hospital, but when he or she is taken for the second dose, that particular vaccine is not available, and they are not able to tell the parents when it would be available as well.

Some of the abiding problems, associated with immunisation of children and adults in the Private Sector, were graphically outlined at the Annual General Meeting of the Vaccines and Infectious Diseases Forum of Sri Lanka, held on the 10th of March, 2026. This needs to be attended to as a significant proportion of vaccines are administered to patients, both children and adults, in the Private Sector.

In other cases, the drug or drugs of proven quality is or are not available in the Private Sector as the company, or importing authority, has wound up the operations in our country due to their inability to sustain the operations, resulting from factors entirely beyond their control. Let us face it, the current pharmaceutical industry is significantly profit-oriented, and they will continue to operate only in countries where their profit margins are quite lucrative.

A Humane Call to All Stakeholders

The current scenario is a shared burden, and it requires a shared, compassionate solution. We must look at this, not through the lens of policy or profit, but through the eyes of the patient waiting in the clinic or in the ward.

* To the Ministry of Health and the NMRA:

We recognise the extremely difficult task of balancing affordability with quality. However, we urge a “Middle Path.” We need a dynamic pricing mechanism that reflects the reality of global trade logistics and the unique challenges of a relatively smaller market. Let us prioritise the restoration of “Quality Assurance” as the primary mandate, ensuring that every generic drug in the state sector is as reliable as the branded ones we have lost. To be able to provide such an abiding certificate of good quality, we need a fully-equipped state-of-the-art laboratory.

* To the Private Sector and Importers:

We ask you to remain committed to the people of Sri Lanka. Your role is not just commercial; it is a vital part of the national health infrastructure. A transparent dialogue with the regulator is essential to prevent more companies from leaving.

* To our Patients and their Families:

We hear your lamentations. We see the struggle in your eyes when a drug is unavailable or when you are forced to seek alternatives from abroad. We respect your right to seek the best possible treatment, and we are advocating for a system that honours that choice legally and safely.

Finally, the Spirit of Care

In the twilight of my career, I look back at my work and the thousands of patients I have treated. The “Spirit of an Enthusiast” is certainly not one of resignation, but of persistent hope. We have the clinical talent and the commitment of our healthcare professionals, we have the history of a strong health service, and we have a populace that deserves the best. For us, in this beautiful land, hope springs eternal.

Let us stop the “baggage medicine” culture. Let us invite the innovators back to our shores by treating them as partners in health, not just as vendors. Let us also ensure that our state-sector generics are beyond reproach.

This is a mission to find a way forward. For the sake of the child in the ward, the elderly patient in the clinic, and the integrity of the medical profession. We desperately need to act now, together, hand in hand, and with a pulsating heart of concern, for the entire humanity we are committed to serve.

by Dr B. J. C. Perera
MBBS(Cey), DCH(Cey), DCH(Eng), MD(Paediatrics), 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.

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Social and political aspects of Buddhism in a colonial context

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Ven. Hikkaduwe Sri Sumangala thera

I was recently given several books dealing with religion, and, instead of looking at questions of church union in current times, I turned first to Buddhism in the 19th century. Called Locations of Buddhism: Colonialism and Modernity in Sri Lanka, the book is a study by an American scholar, Anne M Blackburn, about developments in Buddhism during colonial rule. It focuses on the contribution of Ven. Hikkaduwe Sri Sumangala who was perhaps the most venerated monk in the latter part of the 19th century.

Hikkaduwe, as she calls Ven. Sumangala through the book, is best known as the founder of the Vidyodaya Pirivena, which was elevated to university statues in the fifties of this century, and renamed the University of Sri Jayewardenepura in the seventies. My work in the few years I was there was in the Sumangala Building, though I knew little about the learned monk who gave it its name.

He is also renowned for having participated in the Panadura debates against Christians, and having contributed to the comparative success of the Buddhist cause. It is said that Colonel Olcott came to Sri Lanka after having read a report of one of the debates, and, over the years, Ven. Sumangala collaborated with him, in particular with regard to the development of secondary schools. At the same time, he was wary of Olcott’s gung ho approach, as later he was wary of the Anagarika Dharmapala, who had no fear of rousing controversy, his own approach being moderate and conciliatory.

While he understood the need for a modern education for Buddhist youngsters, which Olcott promoted, free of possible influences to convert which the Christian schools exercised, he was also deeply concerned with preserving traditional learning. Thus, he ensured that in the pirivena subjects such as astrology and medicine were studied with a focus on established indigenous systems. Blackburn’s account of how he leveraged government funding given the prevailing desire to promote oriental studies while emphatically preserving local values and culture is masterly study of a diplomat dedicated to his patriotic concerns.

He was, indeed, a consummately skilled diplomat in that Blackburn shows very clearly how he satisfied the inclinations of the laymen who were able to fund his various initiatives. He managed to work with both laymen and monks of different castes, despite the caste rivalry that could become intense at times. At the same time, he made no bones about his own commitment to the primacy of the Goigama caste, and the exclusiveness of the Malwatte and Asgiriya Chapters.

What I knew nothing at all about was his deep commitment to internationalism, and his efforts to promote collaboration between Ceylon Lanka and the Theravada countries of South East Asia. One reason for this was that he felt the need for an authoritative leader, which Ceylon had lost when its monarchy was abolished by the British. Someone who could moderate disputes amongst monks, as to both doctrine and practice, seemed to him essential in a context in which there were multiple dispute in Ceylon.

Given that Britain got rid of the Burmese monarchy and France emasculated the Cambodian one, with both of which he also maintained contacts, it was Thailand to which he turned, and there are records of close links with both the Thai priesthood and the monarchy. But in the end the Thai King felt there was no point in taking on the British, so that effort did not succeed.

That the Thai King, the famous Chulalongkorn, did not respond positively to the pleas from Ceylon may well have been because of his desire not to tread on British toes, at a time when Thailand preserved its independence, the only country in Asia to do so without overwhelming British interventions, as happened for instance in Nepal and Afghanistan, which also preserved their own monarchies. But it could also have been connected with the snub he was subject to when he visited the Temple of the Tooth, and was not permitted to touch the Tooth Relic, which he knew had been permitted to others.

The casket was taken away when he leaned towards it by the nobleman in charge, a Panabokke, who was not the Diyawadana Nilame of the day. He may have been entrusted with dealing with the King, as a tough customer. Blackburn suggests it is possible the snub was carefully thought out, since the Kandyan nobility had no fondness for the low country intercourse with foreign royalty, which seemed designed to take away from their own primacy with regard to Buddhism. The fact that they continued subservient to the British was of no consequence to them, since they had a façade of authority.

The detailed account of this disappointment should not, however, take away from Ven. Sumangala’s achievement, and his primacy in the country following his being chosen as the Chief Priest for Adam’s Peak, at the age of 37, which placed him in every sense at the pinnacle of Buddhism in Ceylon. Blackburn makes very clear the enormous respect in which he was held, partly arising from his efforts to order ancient documents pertaining to the rules for the Sangha, and ensure they were followed, and makes clear his dominant position for several decades, and that it was well deserved.

by Prof. Rajiva Wijesinha

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Achievements of the Hunduwa!

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Attempting to bask in the glory of the past serves no purpose, some may argue supporting the contention of modern educationists who are advocating against the compulsory teaching of history to our youth. Even the history they want to teach, apparently, is more to do with the formation of the earth than the achievements of our ancestors! Ruminating over the thought-provoking editorial “From ‘Granary of the East’ to a mere hunduwa” (The Island, 5th March), I wished I was taught more of our history in my schooldays. In fact, I have been spending most of my spare time watching, on YouTube, the excellent series “Unlimited History”, conducted by Nuwan Jude Liyanage, wherein Prof. Raj Somadeva challenges some of the long-held beliefs, based on archaeological findings, whilst emphasising on the great achievements of the past.

Surely, this little drop in the Indian ocean performed well beyond its size to have gained international recognition way back in history. Pliny the Elder, the first-century Roman historian, therefore, represented Ceylon larger than it is, in his map of the world. Clicking on (https://awmc.unc.edu/2025/02/10/interactive-map-the-geography-of-pliny-the-elder/) “Interactive Map: The Geography of Pliny the Elder” in the website of the Ancient World Mapping Centre at the University of North Carolina at Chappel Hill, this is the reference to Anuradhapura, our first capital:

“The ancient capital of Sri Lanka from the fourth century BCE to the 11th century CE. It was recorded under the name Anourogrammon by Ptolemy, who notes its primary political status (Basileion). It has sometimes been argued that a “Palaesimundum” mentioned by Pliny in retelling the story of a Sri Lankan Embassy to the emperor Claudius is also to be identified with Anourogrammon. A large number of numismatic finds from many periods have been reported in the vicinity.”

Ptolemy, referred to above, is the mathematician and astronomer of Greek descent born in Alexandria, Egypt, around 100 CE, who was well known for his geocentric model of the universe, till it was disproved 15 centuries later, by Copernicus with his heliocentric model.

It is no surprise that Anuradhapura deservedly got early international recognition as Ruwanwelisaya, built by King Dutugemunu in 140 BCE, was the seventh tallest building in the ancient world, perhaps, being second only to the Great Pyramids of Giza, at the time of construction. It was overtaken by Jetawanaramaya, built by King Mahasena around 301 CE, which became the third tallest building in the ancient world and still holds the record for the largest Stupa ever built, rising to a height of 400 feet and made using 93.3 million baked mud bricks. Justin Calderon, writing for CNN travel under the heading “The massive megastructure built for eternity and still standing 1,700 years later” (https://edition.cnn.com/travel/jetavanaramaya-sri-lanka-megastructure-anuradhapura) concludes his very informative piece as follows:

“Jetavanaramaya stands today as evidence of an ancient society capable of organising labour, materials and engineering knowledge on a scale that rivalled any civilisation of its time.

That it remains relatively unknown beyond Sri Lanka may be one of history’s great oversights — a reminder that some of the ancient world’s most extraordinary achievements were not carved in stone, but shaped from earth, devotion and human ingenuity.”

Extraordinary achievements of our ancestors are not limited to Stupas alone. As mentioned in the said editorial, our country was once the Granary of the East though our present leader equated it to the smallest measure of rice! Our canal systems with the gradient of an inch over a mile stand testimony to engineering ingenuity of our ancestors. When modern engineers designed the sluice gate of Maduru Oya, they were pleasantly surprised to find the ancient sluice gates designed by our ancestors, without all their technical knowhow, in the identical spot.

Coming to modern times, though we vilify J. R. Jayewardene for some of his misdeeds later in his political career, he should be credited with changing world history with his famous speech advocating non-violence and forgiveness, quoting the words of the Buddha, at the San Francisco Conference in 1945. Japan is eternally grateful for the part JR played in readmitting Japan to the international community, gifting Rupavahini and Sri Jayewardenepura Hospital. Although we have forgotten the good JR did, there is a red marble monument in the gardens of the Great Buddha (Daibutsu) in Kamakura, Japan with Buddha’s words and JR’s signature.

It cannot be forgotten that we are the only country in the world that was able to comprehensively defeat a terrorist group, which many experts opined were invincible. Services rendered by the Rajapaksa brothers, Mahinda and Gotabaya, should be honoured though they are much reviled now, for their subsequent political misdeeds. Though Gen-Z and the following obviously have no recollections, it is still fresh in the minds of the older generation the trauma we went through.

It is to the credit of the democratic process we uphold, that the other terrorist group that heaped so much of misery on the populace and did immense damage to the infrastructure, is today in government.

As mentioned in the editorial, it is because Lee Kuan Yew did not have a ‘hundu’ mentality that Singapore is what it is today. He once famously said that he wanted to make a Ceylon out of Singapore!

Let our children learn the glories of our past and be proud to be Sri Lankan. Then only they can become productive citizens who work towards a better future. Resilience is in our genes and let us facilitate our youth to be confident, so that they may prove our politicians wrong; ours may be a small country but we are not ‘hundu’!

By Dr Upul Wijayawardhana

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