Almost all the time.
Many sharks rely on movement to keep water flowing over their gills, which is their version of breathing.
yes
they move or swim with the fins and the move it from side to side
They have gills that they breath through when they move.
They don't sleep. Great White Sharks need to move to breathe. although they do rest.
a great white shark moves at the speed of 43mph
The shark can only be propelled forward (or turn in a circle) by sideways movement of the tail.
Jellyfish lack buoyancy and sink to the bottom of the ocean if they stop moving.
Scientifically, Dolphins. Unless it was 1 dolphin vs. 1 Shark, but since that doesn't happen, and Dolphins stay together, Dolphins. Dolphins circle the Shark until it goes away. There's never a fight.
it depends on what speice you are talking about for example great whites have to move to breathe and feed
shark rays move with all the currents of the ocean.
1. Great white sharks continuously move in water, even when they're asleep. 2. Great white sharks locate their prey using highly developed senses, including a sense of smell which can allow them to locate a single drop of blood in an Olympic size swimming pool. 3. When a great white shark has located and stalked its prey, it strikes very quickly, swimming up to 40 miles per hour and attempting to debilitate its prey with a single bite, sometimes jumping up above the surface of the water to do so. 4. When a great white shark loses a tooth, it replaces it with the many rows of backup teeth it has in its mouth ready to go.
Sharks propell themselves forward with their massive caudal fin on their tails. Their pectoral fins and dorsal fins then steer them through the water.Answerthey swim like a fish. most of the energy comes from their tails.