Wildlife diversity in the area is most noted by its 270 birds species (22 of which are endemic to Mexico), which include the boat-billed heron, common potoo, orange-fronted parakeet and the yellow-headed parrot. There are also 70 species of mammals, 69 of reptiles, and 19 of amphibians.  The ocelot, the jaguar, the greater fishing bat and the endemic pygmy skunk are just some of the many mammals in the region. The boa constrictor, the nine-banded armadillo and the green tree-frog are examples of the diversity of reptiles and amphibians found along the Costalegre.

Within the marine environment, rocky coral reefs span much of the Costalegre, including nearby at Tenacatita Bay. Elegant coral and green coral growing on igneous rock make up the structure of these reefs that harbor a number of tropical fish, including Moorish idols, guineafowl puffers, king angelfish, yellowtail surgeonfish and three-banded butterfly fish. Other marine organisms call these reefs home as well, such as the tiger snake eel, spotted eagle ray and the Olive Ridley sea turtle, the latter of which is the prominent species on the Costalegre which can you protect by participating in our sea turtle monitoring and protection project.

The beaches, mangroves and rocky reefs of the region are excellent sites for the hiking, birding, sea kayaking and snorkeling activities which can be enjoyed while supporting inventory and monitoring programs. For guest and volunteers who choose to stay at the Capacha Center, equipment rentals and guided ecotourism activities can be arranged. Hiking, ebiking, diving, surfing, sailing and fishing are among the many activities along the coast. Nearby attractions include the Chamela-Cuixmala Biosphere Reserve and Sierra Manantlán Biosphere Reserve.

The cultural climate of the Costalegre is typical of emergent Mexican coastal towns. As tourism comprises a large portion of the regional economy, the people of this region (approximately 1,500) are welcoming and supportive of foreign visitors. Some local merchants speak English, but many do not. Arroyo Seco is predominately politically conservative and devoutly Catholic. However, the local population is more than willing to engage foreigners in cultural and political discussion, especially with our long history and many personal and professional connections in the region.