Albert Lleal / Hermit Crab (Dardanus arrosor) using a Sponge (Suberites domuncula) as its home, Mediterranean Sea, Spain
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Alex Mustard / Common hermit crab (Pagurus bernhardus) living in a shell covered in an orange Sea sponge (Suberites carnosus). Loch Carron, Highlands, Scotland, UK.