HORSESHOE CRABS ARE “LIVING FOSSILS,” a group of animals that have been on Earth since before the dinosaurs. Beside being intriguing members of the web of life in their own right – they’re not actually crabs, but four species in a far different arthropod family – they immensely benefit us all. BLOOD WILL TELL Their bluish, coppery blood is regularly harvested for a unique clotting agent that is used to test for bacterial contamination during the production
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