Only 5% of the movements happened when the shark wasn’t obviously moving its body, according to the study. With no specialized sound-producing organs found in these sharks, the researchers are ...

A small international team of marine biologists has observed the first known instance of a shark intentionally making sounds. In their study published in the journal Royal Society Open Science, the ...

Only 5% of the movements happened when the shark wasn’t obviously moving its body, according to the study. With no specialized sound-producing organs found in these sharks, the researchers are ...

One group of sensory organs is the ampullae of Lorenzini ... The great hammerhead is the largest of the nine identified species of this shark. It can grow up to 20 feet in length and weigh ...

But they don't have special organs for sound production and apparently ... in a lifetime—their teeth would fall out. That is why shark teeth are the most abundant vertebrate fossil material ...

A parasitic fish called a lamprey sometimes attaches itself near a male shark’s claspers, or reproductive organs. This can make it more difficult for scientists to identify an individual’s sex.