Bay of Isles
Invisible Island () is a small, tussock-covered island lying close southeast of Crescent Island and Mollyhawk Island in the Bay of Isles, South Georgia. It was charted in 1912–13 by Robert Cushman Murphy, an American naturalist aboard the brig "Daisy", and was probably named by Discovery Investigations personnel who surveyed the Bay of Isles in 1929–30.