In our first year, 2014, marine biologists Johann Mourier and Antonin Guilbert made the first accurate counts: There were some 17,000 groupers and 700 gray reef sharks in the channel. (The fish ...

And they have five, six, or seven gill slits per side, not one per side as in bony fish. Some sharks lay egg cases with developing embryos inside. These sharks are called oviparous (born from an egg).

basking sharks eat tiny organisms called zooplankton. Swimming with their three-foot-wide mouths agape allows them to take in water and filter out plankton using gill rakers, special organs that ...

Unsustainable demand for high value shark fins and the gill plates of certain rays threatens some species, especially those with very low productivity rates. At the last CITES CoP, the large ...

Along the side of the head are gill slits that allow the angel shark to breathe. The positioning of the gill slits represents another important distinction from rays and skates, which have gill ...

Broadnose seven-gill shark DNA was found in the three smaller wounds. Instances of killer whale attacks on sharks’ livers have been reported from South Africa over the last decade, however, these news ...

After their loss Tuesday to Winnipeg, the San Jose Sharks could miss the playoffs for the first time since 2003. But don't expect things to go too wrong for that franchise for too long.