Manuel Antonio National Park is globally recognized as being one of the most biodiverse parks in the world, with abundant tropical forests, lagoons, mangroves and pristine white sandy beaches. Among the 109 species of mammals and 184 species of birds, some of the oft-observed residents include white-faced howler monkeys, 2 and 3 toed sloths, iguanas, and the endangered squirrel monkey. The park contains a great system of perfectly marked trails for hiking, and the four beaches in the park, Espadilla Sur, Manuel Antonio, Escondito and Playita, are some of the best in the country. You can snorkel around in Espadilla Sur and Manuel Antonio when the water is clear during the dry season, which is considered the best time to visit. Surfing, swimming or simply relaxing under the sun are some of the preferred activities for park vistiors.