But many sharks also undertake impressive journeys across the oceans, from great white sharks—some of which travel from South Africa to Australia and back—to lemon sharks that can find ...

Humans have driven sharks and their cousins to the brink of extinction. The health of the entire ocean is at stake.

Overall, then, the answer is no – for 95 percent of shark species, the idea that they’ll keel over if they ever stop moving ...