Tube anemone 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.
Model release not required. Property release not available.