The annual mass nesting of Olive Ridley turtle at Gahirmatha Marine Sanctuary in Odisha did not take place this year, marking a rare and concerning development.
This is the first time in over a decade that the sanctuary has not witnessed the arribada, a phenomenon where thousands of turtles come ashore simultaneously to lay eggs.
Forest officials confirmed that extensive preparations had been made at traditional nesting sites, including Nasi 1, Nasi 2, and Eakakulanasi. However, despite early indicators such as offshore congregation after the mating season, the turtles did not arrive on the beaches for nesting.
Unusual Behaviour Puzzles Experts
According to officials, large numbers of turtles were observed in offshore waters in February, which typically signals the beginning of the nesting cycle. Unexpectedly, the turtles dispersed without laying eggs. While such gaps have been recorded in the past—in 2014 and 2008—this year’s absence stands out, especially after last year’s massive nesting of over 60 lakh turtles.
Experts and conservationists have expressed concern over this disruption, as Gahirmatha is considered one of the most significant nesting sites globally for the species.
Possible Environmental Causes
Environmental experts have identified several possible factors that may have contributed to this unusual pattern. These include coastal erosion, climate variability, illegal fishing practices, unseasonal rainfall, and increased underwater noise. Each of these factors can disturb the turtles’ natural navigation and nesting instincts.
The absence of nesting underscores the need for continued ecological monitoring and sustainable coastal management practices.
Positive Signs from Other Regions
Despite the setback at Gahirmatha, encouraging developments have been reported from Rushikulya beach. Over two lakh Olive Ridley turtles successfully nested at this site between March 14 and 17, indicating that the species continues to remain active along Odisha’s coastline.
This mixed trend provides hope while also emphasizing the importance of protecting multiple nesting habitats.
Significance of Gahirmatha Sanctuary
The Gahirmatha Marine Sanctuary plays a vital role in global marine biodiversity. It serves as one of the largest nesting grounds for Olive Ridley turtles in the world. Any disruption in nesting patterns at this site is viewed as a significant ecological signal that warrants immediate attention.
The absence of mass nesting at Gahirmatha this year highlights the fragile balance of marine ecosystems. While experts remain hopeful that the turtles will return next season, the situation calls for stronger conservation efforts, community awareness, and scientific monitoring to safeguard these endangered marine species.
