Oven Mitt Jelly
Open ocean—or outer space? Although this species of comb jelly looks a lot like a tiny spaceship taking off, its rainbow lights are produced by diffraction, much like sunlight glancing off a CD. It's also more active than most jellies—it often folds over itself, earning the common name of "oven mitt jelly" (Beroe forskalii).
Lacking long tentacles to catch prey, the oven mitt jelly opens its cavernous, curved mouth and engulfs other jellies whole. We collected some just off our decks in Monterey Bay and they're now on exhibit in our Open Sea gallery.