A sea otter dives in a kelp forest in Monterey Bay, California, the US. Sea otters are helping to keep California’s marine ecosystem healthy by feasting on the seaweed-loving urchins whose numbers have exploded. Photo: Getty Images A sea otter dives in a kelp forest in Monterey Bay, California, the US. Sea otters are helping to keep California’s marine ecosystem healthy by feasting on the seaweed-loving urchins whose numbers have exploded. Photo: Getty Images
A sea otter dives in a kelp forest in Monterey Bay, California, the US. Sea otters are helping to keep California’s marine ecosystem healthy by feasting on the seaweed-loving urchins whose numbers have exploded. Photo: Getty Images

How carbon-absorbing kelp forests that fight climate change could regrow along California coast with reintroduction of sea otters – they prey on pests that eat the algae

  • After a disease wiped out their main predator, sea urchins devastated coastal kelp forests, which absorb more carbon dioxide than California’s redwood trees
  • Sea otters, which eat urchins, could help restore balance to the marine ecosystem if they were reintroduced to coastal waters, allowing the kelp to regrow

Topic |   Climate change
A sea otter dives in a kelp forest in Monterey Bay, California, the US. Sea otters are helping to keep California’s marine ecosystem healthy by feasting on the seaweed-loving urchins whose numbers have exploded. Photo: Getty Images A sea otter dives in a kelp forest in Monterey Bay, California, the US. Sea otters are helping to keep California’s marine ecosystem healthy by feasting on the seaweed-loving urchins whose numbers have exploded. Photo: Getty Images
A sea otter dives in a kelp forest in Monterey Bay, California, the US. Sea otters are helping to keep California’s marine ecosystem healthy by feasting on the seaweed-loving urchins whose numbers have exploded. Photo: Getty Images
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