|Basic Information||Biotope classification||Ecology||Habitat preferences and distribution||Species composition||Sensitivity||Importance|
Image Keith Hiscock - A well developed overhang community with pendulous polyclinid tunicates. Image width ca 1 m.
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LR.LR.Ov recorded () and expected () distribution in Britain and Ireland (see below)
Temperature range preferences - Insufficient information
Water clarity preferences - No preference
Limiting Nutrients - Not relevant
Other preferences - No text entered
Overhanging surfaces and small caves occur especially where rocks are stratified and angled so that downward facing surfaces are present. Caves may form where basalt dykes erode and collapse amongst other harder igneous rocks. Soft rock such as chalk and limestone may also erode as a result of wave action to form caves. Cave habitats do not differ greatly in the communities present from those of overhangs or, on wave exposed coasts, surge gullies. Particularly well-developed examples of caves occur around Papa Stour in Shetland and St Kilda with intertidal cave habitats in chalk substrata especially well developed in Kent.
This review can be cited as follows:
Hiscock, K. 2002. Overhangs and caves. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 31/08/2015]. Available from: <http://www.marlin.ac.uk/habitatpreferences.php?habitatid=242&code=1997>