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.
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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