Sharks are known to be carnivores, but there is one hammerhead-type shark that surprisingly also eats plants.
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Researchers discovered that bonnethead sharks feed on seagrass along with their traditional carnivorous diets of crustaceans and small fish. It's a mystery why the bonnetheads eat plants but the answers may lie in their digestive system. If they’re getting enough nutritional value from the grass, they might actually be omnivores.
Read "This Shark Eats Grass, And No One Knows Why."
Plant-Eating Sharks Actually Exist? | National Geographic