[1][4][5][2] The island is predominantly dome shaped with a summit at a height of 35 metres (115 feet) with steep sides rising from the surrounding waters.

[8] The island's geology consists of a "granite base and thin calcarenite mantle" that is "likely to be fragmented into jagged rocks and shingles, with a sandy, skeletal soil filling depressions" in areas that are "beyond the reach of storm waves".

[11] As of 1996, the literature suggests that no onsite fauna survey had been carried out as the following list is an extrapolation of species present on nearby Egg Island.

Seabird species are likely to be represented by sooty oystercatcher, crested tern and pacific gull as well as visitors such as white-bellied sea-eagle.

[13][14] On 25 August 2011, it and the rest of the Isles of St Francis Conservation Park was transferred to the newly created Nuyts Archipelago Wilderness Protection Area.