Horseshoe Crabs

NPR's Allison Aubrey reports on an apparent declining number of horseshoe crabs found in the Delaware Bay. Scientists are conducting an annual survey, and say more restrictive measures may be needed to stop the decline. The decline in the creatures means a decline in their eggs, which fuel thousands of migratory shorebirds which stop at the bay to feed on their way to summer breeding grounds. The crabs are also used for bait, and a clotting agent in their blood is used to test for bacteria in drugs.

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