Baltic macoma

The shell

There are several close relations to the Baltic macoma. This species is recognized by its ligament, which is situated in the oldest part of the mussel, because it contains only cardinal teeth. There are no lateral teeth, as is common amongst other species of this group. The lower delimitation of the mantle bay merges with the mantle line, and the posterior adductor scar is larger than the anterior. On the outside of the shell there are weak concentrical lines that go around the older part of the shell.


Dug down

Contrary to most other specie of mussel, the Baltic macoma lies on its side and sticks its siphons upwards over the surface of the sediment. The long and mobile siphons are separate and can be up to 6 times the legth of the shell. Normally, the Baltic macoma is found between 3-8 cm deep in the sediment. It can move laterally by pulling itself through the upper sediment layer, leaving a furrow showing its movement. During 4 minutes, it can move up to 5 cm.

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The shell

Dug down

Eats in different ways

Fish and ice are danderous

Baltic macoma     More facts     Other names
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Bo Johannesson | Martin Larsvik | Lars-Ove Loo | Helena Samuelsson