Grey Sea Slug (Aeolidia pappillosa), large light coloured nudibranch with many tentacles on back and on indistinct rock background, St Abbs, Scotland, UK North Sea

underwater one animal invertebrates invertebrate grey sea slug slug slugs seaslugs seaslug sea slug sea slugs nudibranches aeolidia pappillosa nudibranch tentacle tentacles st abbs scotland uk united kingdom close up close ups close ups close up north sea sealife sea life