Marino Ballena National Park, located in the southern county of Osa, in the South Pacific Coast, is one of the most important marine reserve and wildlife protection area in Costa Rica. Its land portion is not particularly wide, but more a strip of narrow coast spreading south from as north as Dominicalito to its southernmost part near the Terraba river mouth. Its marine portion however, is of exceptional importance. Not only is it the preferred nesting site for Humpback Whales both coming from the North ( California and beyond ) and the South ( Chile and further south ), but it is also a habitat for resident wildlife species, such as plenty of varieties of sea birds, coastal wildlife, marine mammals and fish ( many species of dolphins, and a vast coral reef, which is inhabited by hundreds of species of coral fish and other creatures, including several species of corals ). The park has plenty of secluded and beautiful beaches, tropical rainforests and an important river and creek system. It can be visited through many entrances, from its main entrance near Ballena, Uvita, as well as from Pinuelas and Playa Arco beaches. The park is located around 45 minutes south of Dominical beach, or around 1 ½ hours South from Quepos.