The delicate Burrowing Anemone, Cerianthus lloydi, is common on soft ground all around Britain. It lives in a slimy tube buried in the ground and projects its sixty tentacles in a flower-like arrangement around it. These tentacles can be up to 4cms in length and there are a similar number of shorter, inner tentacles. It is extremely variable in colour. The anemone will vanish into its tube in an instant if disturbed.
Canna, Small Isles, Western Scotland