They move with there fins. With the tail.
they move there fins and muscles to move in the water!
swim
because they have gills
If sharks did not move then they would die, when they move its like they are breathing, I know we dont do it but they are sharks ya know xD
Sharks do not have the ability to pump water across their gills, therefore they need to continue swimming to move water across their gills so they can breath
Their fins float and flatter in the water when they move.
there fins push thorugh the water
because they are under water and they cant roar!
sharks eat people right
Some sharks would drown but other sharks can pump water over their gills so they don`t need to swim. Some sharks lie in wait for their prey to come to them.
They can breathe under water for as long as they want because the have gills and can get their oxygen from the water. In fact, they'll die within minutes if removed from the water.
sharks cant see underwter however, sharks use this kind of sound wave to see just like bats. they have to be able to see under water.