On the Arctic sea floor lie hungry predators that can eat dead polar bears.
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But the study published last month in the Proceedings of the National Academy of Sciences found that the ocean floor includes organisms across the whole range of the food chain. In this file photo taken on Aug. 4, 2022 a polar bear is attacked by an Arctic Tern defending its nest, as it walks on the shoreline to find something to eat, near Churchill, Man.“It’s a shift in our view of how the coastal Arctic marine food web works,” Amiraux said in an interview.Article content
“You have a whole food web, including primary predators, herbivores and many carnivores. So it’s way more complex than what we thought,” Amiraux said..The study’s authors say “megafaunal-predatory” Pterasteridae seastars thrive in this realm “because of their evolved defence mechanism associated with a diet of other predators, including marine mammal carcasses that settle onto the ocean floor.”“Actually, when a polar bear dies, it can be eaten by carnivore seastars,” Amiraux said.
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