A mass nesting event, most famously among Kemp's ridley and olive ridley sea turtles, in which thousands to hundreds of thousands of females emerge from the sea to nest on the same beach within a span of just a few days, overwhelming predators through sheer numbers rather than relying on the more common strategy of scattered, individual nesting. The word arribada, Spanish for "arrival," describes a phenomenon still only partly understood, with cues thought to include lunar cycle, offshore winds and pheromone signals released by the first nesting females.
Facts
PeriodicityIn the eastern Pacific, peak nesting events between September and December 1 ScaleIn 1991 over 600,000 olive ridley turtles nested along the coast of Odisha in one week 1 Connections
Associated With
Arribada is the specific term for a mass, synchronized nesting event in species such as the olive ridley and Kemp's ridley sea turtles, a distinctive form of the broader sea turtle nesting migration.
Sources
1. Olive ridley sea turtle, Wikipedia
Reproduction section
In the eastern Pacific, nesting occurs throughout the year, with peak nesting events (arribadas) occurring between September and December.
Nesting, Odisha
In 1991, over 600,000 turtles nested along the coast of Odisha in one week.
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