Ulong Island

The channel contains giant clams and one of the largest known patches of green lettuce coral in the world.

[4][5] Uruktapel is the largest island southward of Koror; at about 2 miles (3.2 km) off its western point is Ulong.

Denges and Eil Malk Passages are passable, but navigation may be difficult in the lagoon between them and Ulong Island.

[6] Henry Wilson (1740–1810), an English naval captain of the British East India Company was aboard his packet ship Antelope, when it shipwrecked off Ulong Island in 1783;[7] he returned to England with the local Prince Lee Boo.

In the late 1700s, the island's inhabitants attempted to defend Ulong from attack along Ikesakes Reef but, having been defeated, were forced to leave.