“Everything you do in life comes from horseshoe crab blood," says fisherman George Topping. Vaccines and antibiotics just wouldn't be the same without it.
Blue blood from a horseshoe crab yes. Blue crabs are also a thing and horseshoe crabs are always referred to with the word horseshoe in front. So calling them just crabs with the word blue in front is a poor choice if one cares about communication.
Horseshoe crabs not blue crabs
Horseshoe “blood” is blue, and it’s not actually blood it’s hemolymph. It is blue crab blood. Blue blood from a crab.
Blue blood from a horseshoe crab yes. Blue crabs are also a thing and horseshoe crabs are always referred to with the word horseshoe in front. So calling them just crabs with the word blue in front is a poor choice if one cares about communication.
They weren’t in this case, so that “always” seems to be a stretch.
It’s made clear in the article. If one cares about communication they’re reading past a headline.