[2] About 300 m long, the island that is largely a mass of weathered granite boulders, with a cove and beach on the northern side providing a landing for small boats.
There is little vegetation, though pockets of soil on the higher part of the island support a few plants including the native common boobialla and introduced African boxthorn, tree mallow and buckthorn.
Seabirds breeding on the island include little penguins and silver gulls.
The census' report concluded that the colony had not recovered from a prior collapse.
[2] On 16 March 1967, the island gained status as a Fauna Conservation Reserve.