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While many isopods eat dead or decaying animals, Rocinela isopods tend to be parasites that carve out cozy homes on the backs or among the internal organs of other sea creatures. Most members of the genus appear dull and brown, but it's possible that Fukushima's famed sushi isopod may have taken more than just a meal from one of its former hosts, Hibino said. Fishers caught the peculiar isopod in a net near the coastal town of Rausu on Hokkaido, Japan's northernmost island. The creature was captured at a depth of 2,600 to 4,000 feet (800 to 1,200 meters) and...