Islands protected within the park include Santa Catalina, Pulgoso, Gámez, Tintorera, Obispo, Obispone, Los Pargos, Ahogado, Icacos, Corral de Piedra, Bolaños, Bolañitos and Berraco. These islands are covered by tropical forests including cedar, hawthorn and oak which can provide timber; threats to the area include logging.