Sharks are elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins
Well okay then! I know there are lots of different species as well -- and that they definitely get a bad rap!
Today's shark is classified as  clade Selachimorpha which is not too different from ray
As in a manta ray? I didn't realize they were related in any way.
Sharks  and their history  date back to more than 420 million years ago