WCaño Negro Wildlife Refuge is a Wildlife refuge, part of the Arenal Huetar Norte Conservation Area, in the northern part of Costa Rica twenty kilometers south of Los Chiles near the border with Nicaragua in the Alajuela province. The refuge is a wetlands site that is home to many migratory waterfowl during part of the year, centered on Lake Caño Negro which is fed by the Frío River during the rainy season.
WCocos Island is an island in the Pacific Ocean administered by Costa Rica, approximately 550 km southwest of the Costa Rican mainland. It constitutes the 11th of the 13 districts of Puntarenas Canton of the Province of Puntarenas. With an area of approximately 23.85 km2 (9.21 sq mi), the island is more or less rectangular in shape. It is the southernmost point on the North American continent if outer islands are included.
WJairo Mora Sandoval Gandoca-Manzanillo Mixed Wildlife Refuge, is a protected area in Costa Rica, managed under the Caribbean La Amistad Conservation Area, it was created in 1986 by decree 16614-MAG. It is located among the tropical forest region, with 1950-3000mm yearly precipitation.
WLake Arenal is a lake which is situated in the northern highlands of Costa Rica. It is currently the largest lake in Costa Rica at 85-square-kilometre (33 sq mi). Its depth varies between 30 and 60 meters (100–200 feet) seasonally.
WLas Baulas Marine National Park is a National Park of Costa Rica and a Ramsar Site. The park is managed by the Tempisque Conservation Area, and covers approximately a 167.3 square kilometres (64.6 sq mi) marine area of the Tamarindo Bay, next to the town of Tamarindo. It supports the largest nesting colony of leatherback sea turtles on the Pacific coast of the Americas. Female leatherbacks often come ashore at Playa Grande between October and May to lay their eggs.
WMacho River Forest Reserve, is a protected area in Costa Rica, managed under the Central Conservation Area, it was created in 1964 by executive decree 3417.
WMaquenque Wildlife Refuge, is a protected area in Costa Rica, managed under the Arenal Huetar Norte Conservation Area, it was created in 2005 by decree 32405-MINAE.
WPalo Verde National Park, is a national park of Costa Rica, part of the Arenal Tempisque Conservation Area, that contains much of the area of the valley of the Tempisque River and covers an area of 45,492 acres in Guanacaste Province, 30 km west of Canas. The surrounding region is mostly tropical dry forests, and the park concentrates on conserving vital floodplain, marshes, limestone ridges, and seasonal pools from the encroachment of civilization which was putting the ecology of the area at risk.
WSanta Rosa National Park, is a national park, in Guanacaste Province, northwestern Costa Rica, it was created in 1966 by decree 3694.
WTérraba-Sierpe Wetland, is a protected area in Costa Rica, managed under the Osa Conservation Area, it was created in 1994 by decree 22993-MIRENEM. It has been designated as a protected Ramsar site since 1995.
WVueltas Hill Biological Reserve, is a protected area in Costa Rica, managed under the Central Conservation Area, it was created in 1994 by decree 23260-MIRENEM.