"Kelp forests are made up of thick, undulating ribbons of brown algae that hang on to rocks at the seafloor and grow toward the light above."
"The blob brought drastic changes to the California kelp forests. Elevated ocean temperatures led to a die-off of sea stars. Sea stars typically control the population of sea urchins. Sea urchins eat kelp. And so the coming of the blob created an explosion of urchins. The creatures went on an eating spree that, by some estimates, cleared 96 percent of the kelp from beneath the California coast."
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