SCUBAZOO / SCIENCE PHOTO LIBRARY SCUBAZOO / SCIENCE PHOTO LIBRARY
Tube anemone tentacles lit with red strobe light. Tube, or cylinder, anemones (order Ceriantharia) 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 Manado, North Sulawesi, Indonesia.
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