However, they are not completely sessile, as Mytilus edulis has an appendage known as its foot,
which it excretes from its shell to attach to a substrate.
The foot can then allow the mussel to drag itself, albeit at a very slow pace.
Their lack of motility subjects them to elevated risks of barnacle epibiosis, as well as predation, especially from the common starfish, Asterias rubens.
However, they are not completely sessile, as Mytilus edulis has an appendage known as its foot, which it excretes from its shell to attach to a substrate.The foot can then allow the mussel to drag itself, albeit at a very slow pace. Their lack of motility subjects them to elevated risks of barnacle epibiosis, as well as predation, especially from the common starfish, Asterias rubens.
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