Light refracts off the comb-rows of the Mertensia ovum, a ctenophore, producing stripes of rainbow colors. The jelly eats copepods and small crustaceans that become stuck to its sticky tentacles. View the “Under Arctic Ice” photo essay to learn more.
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Comb Jelly Reflecting Colors

K. Raskoff, Monterey Peninsula College, Arctic Exploration 2002, NOAA