Horseshoe crabs are often referred to as the "living fossils" of our planet—the four known species, including three in Asia and one in North America, remain nearly identical to their ancient relatives ...

They’re also one of the world’s largest arthropods, animals with no backbone, external skeletons, and multiple-jointed appendages. In this crab’s case, those appendages are its 10 legs.

The Japanese spider crab (Macrocheira kaempferi) is no ordinary crab, but a massive arthropod inhabiting the waters around the Japanese islands. Recognizable by its long, spindly legs spanning ...

A certain group of animals have evolved crab-like features due to a process called carcinization that occurs throughout millions of years. But that does not mean you will be seeing a giraffe ...

The city-run Kasaoka Horseshoe Crab Museum is housed in a building modeled after the brackish water arthropod. According to curator Kojiro Azumakawa, the horseshoe crab has a bowl-shaped smooth ...