Lined Nudibranch (Coryphella lineata), fawn coloured British nudibranch with many tentacles on back and bisible line down mid back, St Abbs, Scotland, UK North Sea

underwater nudibranches nudibranch lined nudibranch coryphella lineata fawn british tentacle tentacles bisible line st abbs scotland uk united kingdom one animal sea slug seaslug sea slugs close up close up close ups close ups north sea sealife sea life