The North West of Lundy MCZ is an inshore site that covers an area of 173 km2, extending in an arc between the 6 nautical mile (nm) and 12 nm limits, 15 km northwest of Lundy. It is located in the Western Channel and Celtic Sea region.
The North West of Lundy site contains a large area of subtidal coarse sediment which provides habitat that supports a variety of species, for example segmented bristle worms, venus clams and small crustaceans (such as crabs and barnacles) living within and on top of the sediment. Coarse sediments include coarse sand, gravel, pebbles and shingle. The habitat is often unstable due to tidal currents and/or wave action.
https://www.gov.uk/government/publications/marine-conservation-zones-north-west-of-lundy