Acanthodians are not at all shark-like in shape, for example they have diamond-shaped scales and spines in front of all the fins,' says Emma. 'But they do have a cartilage skeleton, a shark-like skull ...

Researchers at Stanford University’s Hopkins Marine Station found a “White Shark Café” located halfway between Baja California, Mexico, and Hawaii. After years of tagging and monitoring the sharks ...

The exact number varies depending on the species. The only part of a shark's skeleton not made of cartilage is their teeth, which they're famous for. Since cartilage is softer than bone and teeth, it ...