An unhealthy California sea urchin `barren` where kelp can't grow to support fish, plants and other species like healthy habitat can

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An unhealthy California sea urchin `barren` where kelp can't grow to support fish, plants and other species like healthy habitat can

© NOAA Fisheries

An unhealthy California sea urchin `barren` where kelp can't grow to support fish, plants and other species like healthy habitat can photo copyright NOAA Fisheries taken at

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