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Photo of the Day

August 24, 2001

Delaware Horseshoe Crabs, Delaware Bay, 1999

Photograph by Frans Lanting

"Horseshoe crabs were once ground up by the millions for fertilizer. Now their blood is used to detect contamination in drugs and medical equipment. Humans have begun to grasp the staggering variety and value of life on Earth just as we push many species toward extinction."

—From "Biodiversity," February 1999, National Geographic magazine