While the common ancestor of vertebrates with synovial joints is still a mystery, the oldest specimen with evidence of these ...

Cartilaginous fish form the same style of joint that we do, while jawless fish don't. Cartilaginous fish form the same style ...

Nearly one-third of sharks are threatened with extinction, mostly due to fishing. While mandated releases are helpful, researchers discovered that they aren't enough to stabilize shark populations.

In the depths of the world's longest cave, researchers have uncovered the fossilized remains of a 340-million-year-old shark.

As the recreational fishery chips away at shark populations outside the boundaries of scientists’ data books — and as a new ...

Explore the complex issue of catch-and-release sharks and why stronger measures are needed to protect threatened species worldwide.