Like their terrestrial pill bug cousins, giant isopods are crustaceans. However, unlike roly polies, they live in the deep sea and can grow to be the size of a cat. They're often seen feasting on the remains of dead animals that have settled on the ocean floor.
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Key Facts In This Video
Giant isopods are crustaceans that are related to terrestrial pill bugs ("roly polies"). 00:20
Like many other crustaceans, giant isopods have hard exoskeletons. 00:31
See how an ROV can measure a giant isopod using laser dots: 00:45
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