Sea otters help kelp forests recover—but how fast depends on where they are

PHYSorg
Mar 3, 2025, 3:00 pm298 ptsTop
When sea otters were reintroduced along the coastlines of islands in Southern California and British Columbia, researchers saw kelp forests return to areas that were destroyed by sea urchins. But how slow or fast they grew back depended on the location—and until now, scientists didn't understand why.

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