TIL: Horseshoe crabs are vital for the survival of migratory birds. As migratory birds fly from South America to nesting sites in the Arctic, they stop in the Mid-Atlantic to “re-fuel” on freshly-spawned horseshoe crab eggs.

Read more: https://www.delmnh.org/shorebirds/

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  1. Horseshoe crabs are vital to a lot of survival. Their blood is used in a lot of medicine. Helps to test for sterility in medicines — vaccines, stuff like that.

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