The smallest national park in Costa Rica is the Las Baulas National Marine Park (Parque Nacional Marino Las Baulas). Established in 1991, Las Baulas National Marine Park covers an area of approximately 445 hectares (about 1,100 acres).
Located on the Pacific coast in the province of Guanacaste, Las Baulas National Marine Park is primarily known for its nesting beaches for the critically endangered leatherback sea turtle (Dermochelys coriacea).
These beaches, including Playa Grande, Playa Langosta, and Playa Ventanas, provide important nesting habitat for these majestic creatures, which can weigh up to 700 kilograms (1,500 pounds) and reach lengths of over two meters (six feet).
In addition to protecting nesting sites for leatherback sea turtles, Las Baulas National Marine Park also conserves important mangrove ecosystems, estuaries, and marine habitats, providing refuge for a variety of marine species.
Visitors to the park can participate in guided tours to observe nesting turtles, enjoy recreational activities such as swimming and surfing, and learn about marine conservation efforts.