Olive Ridley Turtle Migration: Satellite Study Tracks Chennai Turtles to Sri Lanka Dome

Oceanic Odyssey: Tracking the Olive Ridleys of Tamil Nadu

A satellite telemetry study conducted by the Tamil Nadu Forest Department in collaboration with the Wildlife Institute of India (WII) has revealed the migration patterns of Olive Ridley turtles tagged off the Chennai coast. One of the tagged turtles has successfully reached the 'Sri Lanka Dome' in the Indian Ocean.

What is the Sri Lanka Dome?

The Sri Lanka Dome is a unique seasonal upwelling zone located in the Bay of Bengal, east of Sri Lanka. It is characterized by:

• Nutrient Richness: Deep, nutrient-rich waters rise to the surface, supporting massive blooms of plankton.

• Biodiversity Hotspot: It attracts a wide range of marine life, including fish, whales, and migratory turtles.

• Seasonality: The dome begins forming in May, peaks in July, and starts declining by September, making it a vital summer feeding ground.

Conservation Significance

This study helps scientists identify critical marine corridors and foraging grounds outside Indian territorial waters. Understanding these paths is essential for the long-term survival of the Vulnerable Olive Ridley species. For TNPSC and Science aspirants, this is a landmark update in "Marine Biology" and "Biodiversity Conservation," showcasing the use of satellite technology in wildlife research.