Question

What are the adaptations of shark? 7 adaptation pls..This is for 22 Points so please help me out fast.

Answer 1

Answer:

sharks can sense fear

sharks can smell even one drop of water

sharks normally do not attack humans

Answer 2

Answer:

Found throughout the world, sharks have a variety of species-specific adaptations that help them survive and thrive in various environments:

• Swimming- Their bodies taper to points at both the snout and the tail, reducing water resistance. Rather than bone, sharks have cartilage, which is much lighter and more flexible. In addition, their livers produce squalene, a fatty oil that helps them remain afloat. Their pectoral fins allow them to quickly change direction, dive and swim upward.
• Hunting- Sharks have several means of sensing prey. Their snouts are covered with ampullae of Lorenzini, sensory organs that pick up electrical signals from potential prey. Their inner ears perceive nearby movement, and lateral lines -- parallel rows of scales that run down the shark’s body -- note abnormal movements and currents that might signal the presence of potential food.
• Teeth- When sharks lose a tooth, a new one grows to replace it. The shape and sharpness of the teeth varies by species, though, depending on prey preferences. Those who dine on crabs, mollusks and other shellfish tend to have blunt, flat teeth. Sharks who feed on larger fish and mammals such as seals have sharp, serrated teeth.
• Camouflage- Most sharks are dark with pale bellies. This helps conceal them: Seen from below, the undersides match the pale sky; seen from above, their brown, black or gray backs blend into the deeper water.
• Fin structure- Many sharks' tails, called caudal fins, are larger on top than on the bottom, which allows the animals to swim more efficiently. Some sharks also have a mechanism on their caudal fins called a horizontal keel, which reduces turbulence and allows them to swim faster.
• Detection- Sharks have a complex electro-sensory system. Enabled by receptors covering the head and snout area. These receptors sit in jelly-filled sensory organs called the ampullae of Lorenzini. These tiny pores are extremely sensitive and can detect even the faintest of electrical fields.
• Gills- A shark has fins and a streamlined body that help it swim through water. It has gills, which take in oxygen directly out of the water. Because of its gills, sharks can stay underwater and not have to come to the surface to breathe.

Hope it helps :)