Beautiful nudibranch on coral, Papua New Guinea.

flabellina flabellina exoptata papua new guinea animal markings animal themes animals in the wild aquatic cerata close up color image coral coral reef eating full length gastropod horizontal invertebrate living organism marine biology mollusk nature no people nudibranch one animal outdoors photography reef rhinophore sea sea life sea slugs side view species spiked tropical climate tubercle undersea underwater vibrant wildlife zoology