Underwater forests: beautiful, mysterious, teeming with fishy surprises, and found along the world’s more temperate coastlines. But an enemy is stalking northern California’s shores: small, deceptively pretty sea urchins with a big appetite for kelp. University of California-Santa Cruz ocean sciences graduate student Meredith McPherson details why the urchins wiped out kelp forests and what is being done to turn things around.
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