Nick Upton / Juvenile Edible crab (Cancer pagurus) among Common mussels (Mytilus edulis) in a rock pool with a Rock goby (Gobius paganellus) in the background, Gower Peninsula, Glamorgan, Wales, UK, August.
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Orsolya Haarberg / Coastal rocks covered by Blue mussel (Mytilus edulis) shells. Tomma Island, Helgeland Archipelago, Norway.
