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Horseshoe Crab
Limulus polyphemus
Vulnerable
Location
Atlantic coast of North America
Size
14-19 inches (35-48 cm) long
Diet
Omnivore
Habitat
Shallow coastal waters and sandy beaches
About This Animal
Horseshoe crabs have remained virtually unchanged for 450 million years, predating dinosaurs, trees, and even sharks. Despite their name, they're more closely related to spiders than crabs. Their blue blood is harvested for medical research and is worth $60,000 per gallon.
Amazing Facts
Unchanged for 450 million years - older than dinosaurs
More closely related to spiders than crabs
Has 10 eyes including UV and polarized light detection
Blue blood worth $60,000 per gallon for medical testing
Can survive a year without food