Olive Ridley Turtle Deaths

In recent weeks, Tamil Nadu has witnessed a concerning rise in the number of dead olive ridley turtles washing ashore, particularly in Chennai. Experts estimate that between 300 and 350 turtles have been found dead, raising alarms among conservationists and the public. This unusual spike in mortality during the early nesting season has prompted investigations into the causes behind these deaths.

Recent Mortality Events

Numerous dead olive ridley turtles have been reported along Chennai’s coastline and in the Kancheepuram district. Specific locations include Neelankarai, Besant Nagar, and Kovalam. The state Forest Department is gathering data on the situation. Reports of turtle carcasses have also emerged from Pulicat in Thiruvalluvar district.

Causes of Death

The primary cause of death is bycatch from commercial fishing nets. Turtles often get trapped and drown, as they need to surface for air. Experts suggest the high number of deaths this year may be linked to increased fish availability, attracting more fishing vessels to the area.

Health Indicators of Carcasses

Post-mortem examinations have revealed health issues in the turtles. Many showed signs of suffocation, including lung lesions, bulging eyes, and swollen necks, indicating drowning. These findings highlight the urgent need for conservation efforts.

Nesting Season Overview

Olive ridley turtles nest from late November to March. Mass nesting occurs primarily in Odisha, with activity in Andhra Pradesh and Tamil Nadu. Female turtles lay 100-110 eggs per nest, covering them with sand to protect against predators.

Conservation Measures

The Andhra Pradesh government has imposed a month-long fishing ban near Hope Island to protect nesting turtles. Conservationists advocate for stricter enforcement of turtle-excluding devices in fishing nets to reduce bycatch.

About Olive Ridley Turtles

• Olive ridley turtles (Lepidochelys olivacea) are the smallest and most abundant sea turtles.
• They are known for their mass nesting behaviour, called Arribada.
• Found in warm ocean waters, they typically measure 62-70 cm and weigh 35-45 kg.
• Their conservation status is classified as Vulnerable by the IUCN Red List.

Month: Current Affairs - January, 2025

Category: Environment Current Affairs