Name: The name "Target Reef" is derived from the disused naval gunnery targets that used to be supported by the concrete structure at the site Depth: Maximum depth is about 22 m. and the top of the structure is about 6 m. The average depth is likely to be about 15 m. Marine life Lots of red bait on top of the broken piece at about 18 m, which is deep for red bait. Otherwise, very heavy redbait encrustation around the top of the structure, but walls relatively bare Rubble covered with similar benthic invertebrates to Castor reef. Shoals of smallish Hottentot over top of the structure.. Photography: This is not a particularly good site for photography. The biological diversity is not very high, and the site is small. Macro equipment is most likely to produce good results. Topography: This is a small nearly circular reef about 40 m across, of rubble, boulders and some granite bedrock rising from sand at about 22 m up to the base of a concrete structure at about 18 m. The structure on top is a large reinforced concrete block about 12 m high and 10 to 12 m along each side. It is reported to be identical to the blocks used for the new harbour wall at Simon's Town naval dockyard. The top is severely damaged, presumably by gunfire, as it was a base for targets. Steel reinforcing bar projects from broken concrete all over the top and large chunks of debris are held in place by some of these bars. Two large chunks of the concrete structure have fallen down to the reef. One is right at the base of the main structure, to the north-west, and the other has rolled or slid down to the sand edge to the south-west.