Argentina
The peninsula holds one small town and several salt lakes, the largest being about 40 m (131 ft) below sea level and one of the lowest in South America. In its 3,625 km2 (1,400 sq mi) it features rocky cliffs of up to 100 m (328 ft), shallow bays, wetlands and shifting coastal lagoons with extensive mudflats, sandy and pebble beaches, and active sand dunes. UNESCO cites remarkable flora and fauna in the entire peninsula, as well as key breeding and nursing areas for marine mammals together with birds and Magelannic penguins. Wildlife on the land "includes Guanacos, one of South America's native camelid species, and the Patagonian Mara, a rodent endemic to Argentina" and 181 recorded bird species.