Nudibranch feeding on algae, Papua New Guinea.

hypselodoris bullockii papua new guinea algae animal markings animal themes animals in the wild aquatic color image copy space coral coral reef eating extreme close up full length gastropod horizontal ichthyology invertebrate living organism marine biology mollusk nature no people nudibranch one animal outdoors photography reef rhinophore science sea sea life sea slugs side view species striped tropical climate undersea underwater white wildlife zoology