Horseshoe crab blood saves lives. Can we protect these animals from ourselves? Humans rely on the animal’s blood for lab testing, but the full repercussions of the industry are still not understood.

The carrier crab is uniquely built with two back legs that are especially adapted to grab anything from debris, to a neighbor. They're often found carrying sea urchins to use for protection, but ...

Even National Geographic fellow and sustainable seafood chef Barton Seaver was recently duped into serving Indonesian crab when he thought he had bought some freshly plucked out of the Chesapeake Bay.

This story appears in the August 2016 issue of National Geographic magazine. All around her, guys wave seductively, beckoning her to their beach homes. How will the female fiddler crab pick a mate ...

In this crab’s case, those appendages are its 10 legs. Geographic range and appearance Japanese spider crabs live on the Pacific side of Japan as far south as Taiwan and at chilly depths ranging ...

There’s always a bigger fish. Or in this case, a seal. In a video shot by filmmakers Connor Gallagher and Patrick Webster, a tense dual between a red octopus and a swimmer crab quickly comes to ...

Two Vampire Crab Species Found, ... (See National Geographic's 13 scariest freshwater animals.) These crabs' amphibious lifestyles also influenced the evolution of their bright coloration.

I’ve got a new piece in Nature about a newly discovered species of “yeti crab” that farms bacteria on its arms, then eats them. It lives in the deep ocean, near seeps that belch out methane.

Consider the blue crab. I never had. It was early morning the first weekend of summer. I rolled over in my sleeping bag. The wind whirled outside and threatened to dislodge my tent and toss me in ...

It's white. It's hairy. It's elusive. It's a yeti … crab. Meet Kiwa tyleri, the newest member of the yeti crab family and the first to be found in the cold waters off Antarctica.. Unlike its ...

Silurian horseshoe crab illuminates the evolution of arthropod limbs. Proceedings of the National Academy of Sciences of the United States of America, 109 (39), 15702-5 PMID: 22967511 4th of July ...