GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Tube anemone. Cerianthus sp. tube anemone on the sea-bed. Tube, or cylinder, anemones are anthozoans that look very similar to sea anemones, but belong to a different subclass. They inhabit soft sediments in tubes made of secreted mucous, which they live in and can withdraw into for protection. Photographed off Rinca island, Komodo National Park, Indonesia.
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