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DescriptionCerianthus lloydii is a brownish, tube-dwelling anemone up to 15 cm long. The mouth and tentacles project above the surface of the sand from the soft tube, which can be up to 40 cm long and is permanently buried. There are about 70 long tapering tentacles that may be brown, green or white and are often banded with darker brown. These tentacles cannot be fully retracted and surround many smaller inner tentacles that obscure the mouth. However the animal can retract into its tube if disturbed.