Spanish Dancer (Hexabranchus Sanguineus) -The largest of the nudibranchs is the Spanish dancer—so called because when it swims, the undulating movements of its flattened body are reminiscent of a flamenco dancer. Adults are brightly but variably colored, generally in shades of red, pink, or orange, sometimes mixed with white or yellow.
This species of sea urchin is aptly named "Exquisite Urchin". The species was discovered off the coast of New Caledonia in 2006. Makes you wonder how many other gorgeous creatures are lurking in the depths of the ocean.