This sea snail is tiny, growing to a
microscopic 2mm maximum size. It also likes to live in caves
and crevices and underneath rocks and shingle. Being both so
small and often hidden goes some way to explain why little is known
about this animal.
The sea snail is found high up on sheltered coasts where the
wave action and tidal currents are weak. It lives in areas
rarely covered by the rising tide and its range extends right up
into, and above, the splash zone above the high water mark.
Sea snails are found in the shingle banks associated with
saltmarshes, estuaries and coastal lagoons.
Other common names
Lagoon sea snail
Primarily a Mediterranean species, the sea snail can also be
found in the eastern Atlantic. Its UK distribution is
restricted to the south and west coasts between the Isle of Wight
and the Isles of Scilly. Its range extends as far north as
the Bristol Channel, and it has been found at sites on the north
coast of Devon and the coast of Pembrokeshire. The largest
populations are found in Cornwall and the Scilly Isles.
- Listed as Rare in the British Red Data Book
- Protected under Schedule 5 of the Wildlife and Countryside Act
- Coastal lagoons and saltmarshes in which the sea snails can be
found are a UKBAP priority habitat. Lagoons and some saltmarshes
are also listed on Annex I of the Habitats Directive
Life Information Network
World Register of Marine Species