Adugak Island is a small island in the Fox Islands

Fox Islands (Alaska)

The Fox Islands are a group of islands in the eastern Aleutian Islands of the U.S. state of Alaska. The Fox Islands are the closest to mainland North America in the Aleutian chain, and just east of Samalga Pass and the Islands of Four Mountains group....

 group in the Aleutian Islands of southwestern Alaska

Alaska

Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

. It is about 2 kilometres (1.2 mi) long and is located 8 kilometres (5 mi) off the northwest coast of Umnak Island. The island has been protected as a rookery

Rookery

A rookery is a colony of breeding animals, generally birds. A rook is a Northern European and Central Asian member of the crow family, which nest in prominent colonies at the tops of trees. The term is applied to the nesting place of birds, such as crows and rooks, the source of the term...

 for the endangered steller sea lion, which has been observed during the winter feeding on the fish that inhabit the water nearby. The island reaches an elevation of about 31 metres (101.7 ft) above sea level and the area around the island is extremely hazardous to ships because of the numerous rocks that lie just below the surface of the water.