The researchers noticed that whenever a shark was held, it would start clicking – possibly, Nieder said, the sound of the ...

There are around 500 species of sharks, with more being discovered, but only a small portion of those are seen as highly ...

The rig shark that the scientists were studying is a small shark, growing to just about 5 feet in length. Nieder said the noise it makes sounds a bit like a spark of electricity or a click ...

The Japanese once had a method for keeping fish fresh during offshore trips: they would place a small shark in the tank.