Horseshoe crabs are ancient invertebrates more closely related to spiders than crabs. During spring high tides, female horseshoe crabs make ... ... <看更多>

See more ideas about horseshoe crab, crab, horseshoe. ... Horseshoe Crab Documentary Monster Shark, Crabbies, Invertebrate, Underwater Life, Crustaceans, ... ... <看更多>

Delaware Bay, New Jersey is home to the world's largest population of horseshoe crabs, an ancient invertebrate that's been around for 450 ... ... <看更多>