Is it true that sharks die if they stop swimming?

The idea that sharks will drown if they stop swimming is a common one, but it's not entirely true. There are two main ways sharks go about breathing. Ancient shark species breathed through a method called buccal pumping, which some of today's sharks still use. read more

The idea that sharks will drown if they stop swimming is a common one, but it's not entirely true. There are two main ways sharks go about breathing. Ancient shark species breathed through a method called buccal pumping, which some of today's sharks still use. read more

Many sharks have to swim, these are the ones who can't flow the water into their gills to get oxygen to keep breathing. However, some species of sharks can flow water into their gills while laying on the bottom, one of the species who could lay and breath is a nurse shark. read more

They swim by waving their body in side-to-side curves. It starts with the head turning first one way, then another. The movement ripples down their torpedo-shaped body, pushing the water away and providing forward propulsion. read more