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Blue Mussel (Photo: Galina Garnaga)
Blue Mussel (Mytilus edulis)
Blue mussel is an average-sized mollusc. It can be found in temperate and polar marine waters, also in the Baltic Sea.

Its shell has two parts. Such molluscs are called bivalve. The shell is usually smooth and elongated. Its colour is blue.

This mussel lives in quite shallow waters, attached to the hard substrates like rocks, stones, piles of the bridges and other drowned objects. In order not to be washed away by tides, it produces very strong threads and attaches with it to the substrate.

The blue mussel is edible and not only birds, fish and various invertebrates feed on them, but also people collect them for the same purpose.