Cabo Blanco Absolute Biological Reserve is found on the extreme southern point of the Nicoya Penninsula in the Province of Puntarenas. Created in 1963 this reserve has 1,172 hectares of land area and 1,790 hectares of sea.

     This is a reserve for flora and fauna of the Dry Pacific Region and of the marine species of the area. Amoung the trees of the area the nispero (Manilkara zapote), pochjote (Bombacopsis quinatum) and espavel (Anacardium excelsum). In all, 119 tree species have been reported in the reserve. Among the fauna, the birds and marine species are most notable.