Corcovado National Park () is a National Park on the Osa Peninsula, in Osa Canton, southwestern Costa Rica (9° North, 83° West), which is part of the Osa Conservation Area. It was established on 24 October 1975, and encompasses an area of . It is the largest park in Costa Rica and extends over about a third of the Osa Peninsula. It is widely considered the crown jewel in the extensive system of national parks and biological reserves spread across the country. National Geographic has called it "the most biologically intense place on Earth in terms of biodiversity". The park conserves the largest primary forest on the American Pacific coastline and one of the few remaining sizable areas of lowland tropical forests in the world. Historically, logging has taken place in lowland areas due to their easy accessibility and the presence of the largest and most economically valuable trees. But those habitats, which feature diverse vegetation, are also usually the richest in biodiversity. What is left of the originally rich lowland forests is usually too small an area to support the original natural biodiversity. Larger animals, especially, need a large habitat free of human activity. This means that even tourism, the economic incentive for Costa Rica and other developing nations to preserve and protect parks such as Corcovado, actually threatens the long-term biodiversity of the park. Biodiversity Corcovado is home to a sizable population of the endangered Baird's tapir and a small population of the rare harpy eagle. The park's rivers and lagoons are home to the American crocodile and spectacled caiman, along with bull sharks. Corcovado is also one of the final strongholds of the jaguar within Central America, and several other felines are also present, including ocelot, margay, jaguarundi, and puma. All four Costa Rican monkey species can be seen within the park, including the endangered Central American squirrel monkey, white-faced capuchin, mantled howler, and Geoffroy's spider monkey. Other mammals present include two-toed and three-toed sloth, collared peccary, northern tamandua, and silky anteater. Poison dart frogs, red-eyed tree frogs, glass frogs, and several species of snake (including the venomous fer-de-lance and bushmaster) are also present within the park. Most animal sightings can be expected along the coast, including scarlet macaws (the largest population in the country), hermit crabs, pelicans, spider monkeys, tamandua anteaters, pumas, white faced capuchin monkeys, lineated woodpeckers and coatis. Other animals in the park include