Sharks glide through the water by using their streamlined bodies and powerful tails. Their bodies are torpedo-shaped, which reduces drag and allows them to move through the water with minimal resistance. Their tails are long and powerful, and they use them to propel themselves forward. Sharks also have special fins that help them to control their movement. Their pectoral fins are located on the sides of their bodies and help them to steer. Their pelvic fins are located on the bottom of their bodies and help them to maintain their balance.
Sharks are also able to glide because they have a special organ called a swim bladder. The swim bladder is a gas-filled sac that helps sharks to control their buoyancy. By adjusting the amount of gas in their swim bladders, sharks can rise or sink in the water.
The combination of their streamlined bodies, powerful tails, and swim bladders allows sharks to glide through the water with grace and efficiency. They are able to reach speeds of up to 30 miles per hour and can cover great distances without expending too much energy.