Hermit Crab Hydroid (Hydractinia echinata), on Common Hermit Crab, St Abbs, Scotland, UK North Sea

underwater crustaceans crustacean hermit crab crab crabs hydroid hydractinia echinata common hermit crab st abbs scotland uk united kingdom one animal close up close up close ups close ups north sea shell seabed sea bottom hiding hide home shell home looking towards camera sealife sea life looking at camera timid shy