Their skin is covered with denticles, tooth-like scales that differ from the scales of bony fish. And they have five, six, or seven gill slits per side, not one per side as in bony fish.

Fish typically employ mechanoreceptors called neuromasts, which make up a sensory stripe along the length of the fish’s body called the lateral line, to detect movement or vibrations in water, but A.

And it's a little different from your typical fishy scales. It's made up of thousands of dermal denticles, the toothlike structures you can see here. And they're tough. So tough that sharkskin by ...

"Sharks are special because their dermal denticles are different from the scales of the other fish," Wu said. Wu will partner with Louis Cattafesta, the John G. and Jane E. Olin Endowed Department ...