Olive Ridley Sea Turtle Welfare: Arribada Nesting and Mass Bycatch

Olive ridley sea turtles gather in mass synchronised nesting events called arribadas involving hundreds of thousands of females. Their welfare is threatened by offshore bycatch that prevents adults reaching nesting beaches.

Key Facts

Olive ridley turtles synchronise nesting in mass events called arribadas on beaches in Mexico, India, and Costa Rica
An estimated 500,000 olive ridleys are killed annually in global fisheries bycatch
They are the most numerous sea turtle in the world but population trends are uncertain
Trawl fisheries operating offshore during nesting season intercept gravid females before they can nest
Turtle excluder devices on trawl nets can reduce olive ridley bycatch by over 97%

Welfare Considerations

Olive ridley bycatch in trawl nets involves drowning — sea turtles can hold their breath for extended periods but eventually suffocate in nets. Gravid females killed before nesting represent a double welfare and conservation loss: the individual animal and the clutch of eggs she carried. The existence of highly effective turtle excluder devices that can be mandated at low cost makes continued mass olive ridley bycatch one of the most preventable large-scale wildlife welfare crises.

What You Can Do

Support campaigns for mandatory turtle excluder devices on all trawl fisheries globally
Choose certified sustainable seafood from fisheries that document low sea turtle bycatch
Donate to Sea Shepherd and Oceana campaigns specifically targeting trawl bycatch reform
Back diplomatic pressure on countries with high sea turtle bycatch rates