Its teeth are designed not so much to grab or slice fish but to prevent them from escaping once the coelacanth has sucked them into its gaping maw. Beneath the chin lie large, bony plates.

sharing a common ancestor that branched away from the line leading to bony fish. Their close relationship is evident in the details: both groups have similar gill structures, skin covered in tiny ...

Sharks don’t have the swim bladders that many bony fish have to stop them from sinking ... As well as being flexible, their skeletal structure helps give some species of shark a powerful bite. Their ...