Maritime cliffs and slopes have been identified as a priority habitat in the UK Biodiversity Action Plan. The comprise sloping to vertical surfaces on the coastline where a break of slope is formed by slippage and/or coastal erosion. There appears to be no generally accepted definition of the minimum height or angles of slope which constitutes a cliff, but the zone defined as cliff top should extend landward to at least the limit of maritime influence.On the seaward side, the planextends to the limit of the supralittoral zone and so includes the splash zone lichens and other species of this habitat
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