This is unique Marine Reserve which is an island of sand bank seen only during low tide and is devoid of vegetation. It is located in the northern part of Dar es Salaam after Mbudya Island Marine Reserve. The lower intertidal zone on the west and north is sandy with abundant sea grass mixed together with coral patches. The southeast lower intertidal areas are rocky.

Coral reefs are found on the western and eastern side of the Island where more than 35% of coral cover is located on two locations: one on the southwest waters of less than 10 m (108,320 m2) and the other on the deeper waters (462,765 m2). 

Like other DMRS islands the dominant sea grass species are Thallasodentron ciliatum and Thalassia hemprichii. Animals in the intertidal flats include sea cucumbers, octopus, sea urchin, giant clamps, rock crabs, tigger cowry, starfish, cushion starts, nudibranchia and crabs.