Unga Island is the largest of Shumagin Islands (Aleutians), located off mainland Alaska (Alaska Peninsula). The island covers a total area of approx 442 km2 (171 ml2), ranking it USA's 35th largest. Aleutian Islands are a small archipelago located between Bering Sea (north) and Pacific Ocean (south). They extend for approx 1800 km (1100 ml) from Alaska Peninsula to Attu Island.
The island is currently uninhabited. It was previously named Grekodelarovskoe Ostrov - after Evstratii Ivanovich Delarov (1740-1806) - Greece-born skipper who served the Russian-American Company (fur trading company) in Alaska, which was then called Russian America.
In the 19th century, Unga Island's economy was based on mining and cod fishing. With the decline of these industries, its population departed, leaving a ghost town in its place. Puffins, kittiwakes, cormorants, sea otters and peregrine falcons are prominent among the cliffs of this picturesque island.