波塞申湾是南极洲的海湾，位于南格鲁吉亚岛，长8公里、宽3.2公里，在1775年由詹姆斯·库克率领的英国探险队发现，现时由英国海外领土管辖。

• Stonehouse, B (ed.) Encyclopedia of Antarctica and the Southern Oceans (2002, ISBN 0-471-98665-8)

Possession Bay is a bay 2 miles (3.2 km) wide which recedes southwest for 5 miles (8 km), entered southeast of Black Head on the north coast of South Georgia, an island in the southern Atlantic Ocean.