This particular nudibranch (sea slug) appears like a lantern, lit from within. I love its ethereal yet playful quality, with the name 'Doto Donut', you can see all its body is like little donuts stacked on top of each other. Cool facts: It can absorb the stinging cells (nematocysts) from its hydroid prey and store them in its cerata for its own defense. Also, it is a hermaphrodite, meaning it possesses both male and female reproductive organs.