tube anemone - cerianthus membranaceus

actiniaria actiniidae anemone anemonefish anemones anemonia animal animals anthozoa aquarium aquatic atlantic cerianthus cnidaria coast coral exotic fauna focus invertebrate life marine mediterranean membranaceus natural nature ocean red reef saltwater sea seashore selective snackelocks snakelocks tentacle tentacles tranquility tropic tropical tube under underwater viridis water waters wild wildlife