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Sea urchin population explodes off West Coast

They may be small creatures, but sea urchins have become a big problem in our oceans. Due to an ecological imbalance, they're devouring marine habitats off America's West Coast and elsewhere, impacting other species. Help may be on the way from a unique partnership between scientists and a seafood company. Correspondent John Blackstone shows us how they're looking to turn a menace into a meal.
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