❓ why
Why do some sharks have to keep swimming?
animalsocean
Quick Answer
Species like great whites rely on 'ram ventilation', pushing water over their gills by swimming, so stopping would starve them of oxygen.
The Full Story
Many sharks, including great whites, makos and whale sharks, are obligate ram ventilators: they swim with mouths open so water flows over the gills. Other sharks, such as nurse sharks, can pump water with their cheek muscles while resting on the sea floor. Sharks also lack a swim bladder, relying on a large oily liver for buoyancy, so swimming helps them avoid sinking too. The idea that all sharks die if they stop is a myth.
Key Facts
1.A shark's liver can make up around 25% of its body weight.
2.Nurse sharks can rest motionless on the seabed for long periods.
3.There are over 500 known species of shark.
YouTube Angle
Suggested video title for this topic:
"Do Sharks Die if They Stop Swimming? The Truth"