A deep water Arctic species, Bolocera tuediae, has no recognized common name although some people refer to it as the Deeplet Anemone. It is right at the southern end of its range around northern Britain and is probably most common in the North Sea. It can be quite large - maybe up to 20cms in diameter and unlike many anemones, it is unable to retract its tentacles. It is usually salmon-pink to white.
St. Abbs Marine Reserve, North Sea