The Golfo Dulce environment supports at least 1,028 species (Morales-Ramírez 2011), several of which are endangered. In fact, the total number of marine species found in the Pacific waters of Costa Rica is more than double the number reported from the Caribbean side of the country (Wehrtmann & Cortés 2009). A litany of fishes, mammals birds, reptiles and invertebrates thrive in Golfo Dulce and the surrounding forests. There are a few areas within the embayment that are particularly dense with life—in general, riparian zones with concentrated mangroves. Near the pueblo of Puerto Jiménez, a smaller river called Platanares forms an estuary with dozens of native species, including caimans, Caiman crocodylus, and American crocodiles, Crocodylus acutus (Bessesen 2015).


Bessesen, B.L. 2015. Occurrence and distribution patterns of several marine vertebrates in Golfo Dulce, Costa Rica. Revista de Biología Tropical 63(Supl.1):261-272. [link]

Monge, J. 1996. Pacific Coastal Ecosystems of Costa Rica with Emphasis on the Golfo Dulce and Adjacent Areas: A Synoptic View Based on the RV Victor Hensen Expedition 1993–1994 and Previous Studies. Oficina de Publica de la Universidad de Costa Rica, 238 pp. [no link available]

Morales-Ramírez, A. 2011. La diversidad marina del Golfo Dulce, Pacífico sur de Costa Rica: amenazas a su conservación. Biocenosis 24:9–20. [link]