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Although not their main food source, seaweed is part of the diet of carnivores like polar bears, arctic foxes and seals.

Few fish feed on seaweed because it is difficult for them to digest. However, butterfish has seaweed as part of their diet. Parrotfish and the surgeonfish are also seaweed-eaters.

Many crustaceans, invertebrate marine animals with an external skeleton, eat seaweed, including crabs, lobsters, crayfish, woodlice, pillbugs and krill. Mollusks such as periwinkles, a type of snails that live on the seashore, also feed on seaweed attached to rocks.

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12y ago

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