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harbinger | noun

har·​bin·​ger | \ˈhär-bən-jər\

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2. something that foreshadows a future event : something that gives an anticipatory sign of what is to come.

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Dr Asha De Vos, Sri Lankan marine biologist.

Picture by: Majority World CIC | Alamy

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Asha De Vos: Sri Lanka’s first deep-sea explorer

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Hesandi Ravisinghe in Galle, Sri Lanka

17-year old-Hesandi kicks off a new Harbingers’ series on Women in STEM with a Sri Lankan trailblazer in marine biology

Sri Lankan marine biologist and pioneer of blue whale research in the northern Indian Ocean, Dr Asha de Vos is Sri Lanka’s first deep-sea explorer.

Born in 1979, Dr de Vos moved to Scotland for her undergraduate studies in marine and environmental biology at the University of St Andrews. She later earned her master’s degree in integrative biosciences at the University of Oxford and a PhD from the University of Western Australia.

How did her interests develop?

Her journey started when she was six years old, when National Geographic magazine inspired her to become an “adventure scientist”. Growing up in Sri Lanka, where the ocean was a constant part of her surroundings, she was intrigued by marine life and what existed beneath the surface.

“When I went to university for marine biology, I was pretty hell-bent on the idea of unravelling this mystical magical place,” she saidin an interview.

Her career took a pivotal turn in 2003, when she spotted animal faeces floating to the surface while on a research boat off the Sri Lankan coast. They belonged to a group of six blue whales that De Vos soon realised were not migrating out of the North Indian Ocean, to areas with a richer food supply.

Typically, blue whales migrate long distances from cold feeding areas to warm breeding areas. But these blue whales around Sri Lanka remained in warm waters – considered not food sufficient – throughout the year.

Understanding why and what allowed these whales to behave differently – and to survive – meant that Dr De Vos had to “step out of her comfort zone” (marine biology) and conduct her PhD in an oceanography lab in Western Australia instead.

She dubbed this group of whales “unorthodox whales” as they were an unrecognised unique population. Her research also drew attention to a threat facing this population: ship strikes. She discovered that blue whales were often injured or killed by vessels coming to and from Colombo’s port.

What has she achieved?

Dr Asha De Vos is the founder and director of Oceanswell, Sri Lanka’s first marine conservation research and education organisation. She is also the first Sri Lankan to earn a PhD in marine mammal research.

In 2008, she founded the Sri Lankan Blue Whale Project, which focuses on the research and conservation of the “unorthodox” whales. Due to De Vos’s research, the International Whaling Commission recognised Sri Lanka’s blue whales as its own subspecies called Balaenoptera musculus indica.

De Vos is a TED Senior Fellow, and has used the platform to spread awareness about blue whales in the northern Indian Ocean. She is also a Duke University Global Fellow in marine conservation, a National Geographic Explorer and a Young Global Leader of the World Economic Forum.

Among her many awards, Dr de Vos has received the President’s Award for Scientific Publication in Sri Lanka (2015); Wings WorldQuest Women of Discovery Sea Award (2018); and the Vanithaabimana Lifetime Achievement Award (2021), which recognises Sri Lankan women who have made exceptional contributions to the country.

 

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Encouraging women in science

Throughout her career, De Vos has encountered many people who disapproved of her chosen career or did not take her seriously. “I was always too young and too female.”

She encourages women to pursue their ambitions and career paths without allowing gender to define their capabilities: “Strive not to be defined by your gender, but by your capacity. At some point, no one will look like you are just a woman, but like the only person who can solve a problem.”

De Vos also encourages women to support and empower one another, and to become examples others can see themselves in. She has spoken about the additional barriers women often face in achieving their goals and emphasises the importance of never giving up.

In her words, “If you stay true to your life, true to your dreams, true to what you believe, the system will adapt and I have seen that in my own life.”

Written by:

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Hesandi Ravisinghe

Science Section Editor 2026

Galle, Sri Lanka

Hesandi Ravisinghe, born in 2009 in Galle, Sri Lanka, joined Harbingers’ Magazine as a contributor to the Sri Lankan Newsroom in January 2024. After completing the writing course, she became a regular writer, focusing on wildlife and science.

Her strong interest in nature and consistent work with the magazine led to her appointment as Science Section Editor in March 2025, a role she continues to hold in 2026. She also serves as Editor of the Nepali Newsroom.

Hesandi has a deep interest in art, nature and wildlife, particularly elephants, leopards and birds.

In her free time, she enjoys painting and travelling.

Hesandi speaks English and Sinhala and is currently learning Indonesian.

Edited by:

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Arnav Maheshwari

Editor-in-Chief 2026

Georgia, United States

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