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Known for their mass nesting events, Olive Ridley turtles head back into the open ocean after laying eggs. But where they go next had long remained unclear. New research has uncovered why these turtles are swimming toward Sri Lanka.
The findings, based on satellite tracking data, provide fresh insight into the movement patterns of one of the world’s most widespread sea turtle species.
What’s happening in the Sri Lanka Dome?
At the centre of this migration lies the Sri Lanka Dome, a seasonal ocean phenomenon in the Bay of Bengal. This is where cold water wells up to the surface, carrying with it nutrients to stimulate a growth of plankton and fish.
This sudden abundance of food transforms the region into a feeding hotspot, attracting marine species including turtles looking to replenish energy after nesting.
Long message, but trust me, it will be worth your time. Here is a remarkable update from Tamil Nadu’s tagged turtles. Early tracking data shows that some have already travelled to the Sri Lanka Dome, a little known ocean region where marine life gathers in extraordinary numbers.… pic.twitter.com/h2yUzvOLiW
— Supriya Sahu IAS (@supriyasahuias) April 25, 2026
Where did Olive Ridley turtles begin their journey?
Olive Ridley turtles begin their journey from India’s eastern coastline, especially from nesting beaches in:
Odisha (notably Gahirmatha and Rushikulya) Tamil Nadu (including the Chennai coast)
These turtles come ashore to lay eggs and, after nesting, return to the sea.
How scientists tracked these turtles?
In order to find this pattern, researchers from Wildlife Institute of India attached satellite tags to turtles in India. These transmitters beamed real-time information to scientists which afterwards led them mapped out routes of the turtles.
This revealed an interesting pattern. Turtles from different areas congregated in the ocean in the same region near Sri Lanka's coast, establishing the significance of the area.
Did the Satellite only see Olive Ridleys?
The movement study mainly centered on the Olive Ridley turtles and a majority of the data is associated with this species.
As per scientists, such feeding grounds attract various marine predators such as fish, plankton feeders and even possibly other turtle species. But the current study is applicable only for Olive Ridley.
Is this turtle gathering a rare phenomenon?
It is well-known that Olive Ridleys are one of the most migratory species, but this particular route to the Sri Lanka Dome was unknown until now. Satellite data has confirmed what was a mystery.
So, the Sri Lanka Dome is critically important!
Yes. The new discovery highlights the Sri Lanka Dome as more than just another ocean structure, it is a feeding ground. Turtles may not be able to recover from such deprivations of such food-rich areas to sustain themselves and also reproduce. It also expands the conservation focus from the beaches to the sea. Gurpreet Singh first published: Apr 29, 2026 12:13 pm Discover the latest Business News , Sensex , and Nifty updates. Obtain Personal Finance insights, tax queries, and expert opinions on Moneycontrol or download the Moneycontrol App to stay updated!
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