The region is rich in sea life, with more than 4,000 species of marine molluscs.

There are more than 4,000 species of marine molluscs.

It is a medium sized marine mollusc up to 5.0 cm in length.

Shells from marine and freshwater molluscs often provide evidence of the food eaten by inhabitants.

It is a marine mollusc in the family Pectinidae.

It is a species of mussel and a marine bivalve mollusc.

It is a marine gastropod mollusc in the family Tritoniidae.

This is a marine gastropod mollusc of the family Buccinidae.

These animals are marine gastropod molluscs in the family Dorididae.

Distribution of the marine molluscs of north west Europe.