Blue blood from horseshoe crabs is needed for medicine, but a declining bird relies on crabs to eat

Horseshoe Crabs: Characteristics, Blue Blood, Mating and Medicine

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Blood from horseshoe crabs is needed for medicine, but a bird relies on them to eat, Nation & World News

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Blue Blood from Horseshoe Crabs is Needed for Medicine, But a Declining Bird Relies on Crabs to Eat

Blue Bloods

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Blue blood from horseshoe crabs is needed for medicine, but a declining bird relies on crabs to eat

Blue blood from horseshoe crabs is needed for medicine, but a declining bird relies on crabs to eat

Blue blood from horseshoe crabs is needed for medicine, but a declining bird relies on crabs to eat

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