These sharks rely on their constant swimming to force water through their mouth and over their gills. This process of forcing water is known as ramjet ventilation. Sharks have keen senses that enable them to compete successfully for prey. They have excellent hearing, though it is limited to low-pitched sounds. Sharks can home in on prey by its sounds.
Some scientists believe that the shark's lateral line detects the lowest-pitched sounds.
The lateral line is a sensory system of fluid-filled canals that runs down both sides of the shark's body, from its head to its tail. The lateral line, sometimes called distant touch, also detects water movement. Sharks have highly sensitive eyes that can see extremely well in dim light. Sharks even possess a crude form of color vision. However, they may not be able to see details clearly.