The island is situated 1.4 kilometres (0.87 mi) off the east coast of New South Wales, within the Tasman Sea.

The island reaches a height of around 20 metres (66 ft) above sea level, and the prominent rocky cliffs make access difficult by boat.

[2][3] The island was once part of the Australian mainland,[3] however it separated four to six thousand years ago with rising sea levels.

A pair of peregrine falcons breed on the island; their main food consists of young white-faced storm petrels.

The flora on the more exposed areas has pigface, a tussock grass and a long stalked form of Lomandra.

[3] The shallow waters near the island support blue groper, Port Jackson sharks, stingrays and cuttlefish.