Assertion: purple sea urchin | /r/CapableOf | feed on kelp
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text: Pacific purple sea urchins feed on kelp and are at least partially to blame for the deforestation of Northern California’s kelp forests due to their increasingly aggressive feeding behavior.1 Marine heatwaves have caused kelp forests declines, and helped give rise to what is known as increasing “urchin barrens,” or large swaths of seafloor that are overrun by kelp-feasting Pacific purple sea urchins and other species.