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Ostional

Costa Rica, Guanacaste

Ostional

LocationCosta Rica, Guanacaste
RegionGuanacaste
TypeWildlife Refuge
Coordinates9.9833°, -85.6833°
Established1983
Area84.5
Nearest CityNosara (10 km)
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About Ostional

One of the most important olive ridley sea turtle nesting sites in the world, Ostional hosts some of the largest "arribadas" on Earth with up to 500,000 turtles nesting in a single event. The refuge is notable for a community-managed sustainable egg harvesting programme that supports local livelihoods.

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International Parks
March 27, 2026

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Frequently Asked Questions

Where is Ostional located?

Ostional is located in Guanacaste, Costa Rica at coordinates 9.9833, -85.6833.

How do I get to Ostional?

To get to Ostional, the nearest city is Nosara (10 km).

How large is Ostional?

Ostional covers approximately 84.5 square kilometers (33 square miles).

When was Ostional established?

Ostional was established in 1983.