Swains Island

Coral atoll, American Samoa, southwestern Pacific Ocean, 280 miles (450 km) north of Tutuila. The atoll is 15–25 feet (5–8 m) above sea level; it is circular in shape, with 8 miles (13 km) of shoreline, and encloses a freshwater lagoon. It has an area of about 1 square mile (2.6 square km). Probably first known to Europeans in the 19th century, the atoll was named for a whaling captain. It is not geographically a