The same reason you need air
it is because the shark need salty water to breath
Great White Sharks can swim up to twenty miles per hour and need to attain this speed to launch their massive bodies out of the water. This type of jumping is typically done as a surprise attack on an unsuspecting seal.
They don't sleep. Great White Sharks need to move to breathe. although they do rest.
No. Sharks do not have lungs. Instead, they have gills just like fish and get all the oxygen they need directly from the water. However, several species of sharks are known to jump into the air for other reasons. Some leap, often called "breaching", when feeding on animals like fish or seals on the surface, or to dislodge parasites attached to their skin.
No, Great White Sharks are carnivorous predators and primarily feed on marine mammals like seals, fish, and sometimes even other sharks. They do not eat seaweed as it does not provide them with the necessary nutrients and energy they need to survive.
because if the great white shark tried kill them how would they help themselves
No, because they need salt for their gills to breath.
because they're very big, and they need to eat a lot
Yes, white sharks have gills that allow them to extract oxygen from water, which is how they breathe underwater. They need to constantly swim to ensure a flow of water over their gills for oxygen exchange.
Yes, they like most living things need to remove waste from their bodies
Great white sharks swim in the ocean because they are very big sea creatures. They need space to swim, and hunt for food. Also, they like to swim near the deepest, darkest, coldest bottom of the ocean.
I don't know, but i need to for a school project. I wish someone would just answer already!