Sea otters may be adorable to look at and fun to watch, but what and how much they eat has put them at the centre of a debate.
But the urchins' only other natural predator—sea otters—were hunted nearly to extinction in the 1800s for their fur. The idea is to bring them back to try to save the kelp. "Basically, it's an underwater desert in which the kelp has been wiped out," said Leah Schrodt with the U.S. Fish and Wildlife Service.
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