On the Arctic sea floor lie hungry predators that can eat polar bears.
The voracious carnivores are seastars, better known as starfish, and a new study by a national research group says they tie with polar bears as the top predators of the Arctic marine ecosystem.Sign up to receive daily headline news from Ottawa Citizen, a division of Postmedia Network Inc.By clicking on the sign up button you consent to receive the above newsletter from Postmedia Network Inc.
Seastars within the Pterasteridae family sat at the top, with the study dubbing them “the benthic equivalent to polar bears.” He said that invertebrates, or creatures without backbones, living in sediment on the Arctic sea floor did not just consist of plant-eating herbivores. 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.Article content
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