Sharks may have a reputation as ... them a better visual ability to scan for food. They eat smaller fish, octopuses, squid and crustaceans. Humans are not a part of a normal shark diet because ...

Although most sharks are carnivores, they eat more than meat ... lawnmowers and toasters all kill more people every year than sharks do. Michael Dhar is a science editor and writer based in ...

But their jaws, spinal column and the cartilage surrounding their brain are strengthened by calcium salts, which get deposited into their skeletal cartilage from the food they eat. Over time, this ...