Solan Bank presents highly topographic bedrock and smooth, undulating bedrock reef outcrops and stony reef (comprising boulders and cobbles) in a range of depth zonations from the infralittoral to deep circalittoral and within a range of energy levels with a resulting broad range of ecological communities and faunal diversity. The reefs support encrusting bryozoans, encrusting coralline algae, caryophyllid cup corals and ophiuroids. Highly sediment-scoured bedrock is mainly colonised by the keel worm Pomatoceros triqueter. Less-scoured bedrock support a range of sponges, bryozoans and hydroids. In shallower areas with increased water movement there is an increasing abundance of the soft coral, Alcyonium digitatum, the cup coral, Caryophyllia smithii and the jewel anemone, Corynactis viridis, with red algae and kelp in the shallowest areas.