bivalves
Large bivalve with a thick shell and a glossy yellow or brown coloring.
Photo from IMARES via WORMS
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Distinguishing features: Larger and faster growing than other similar species. It has a thick shell and a glossy yellow or brown coloring, and a flat umbo. It is also ypically found subtidally rather than intertidally.
Easily confused species and differentiation: Mytilus edilus (MYED)
Extended Description: Large, thick, glossy yellow-brown bivalve. Attaches to hard substrate using byssal threads, typically in deeper, colder, saltier waters. They are less suited to the intertidal, particularly the upper intertidal.