How do the ampullae of Lorenzini help a shark hunt?

The ampullae of Lorenzini are electroreceptors located in the head of sharks, rays, and some bony fish. They are used to detect weak electrical fields in the water, which can be generated by prey animals or other objects. This allows sharks to hunt in dark or murky water, where they may not be able to see their prey.

The ampullae of Lorenzini are lined with sensory cells that are connected to the shark's nervous system. These cells are sensitive to changes in the electrical field around the shark, and they can detect even very small changes in the voltage. When the shark detects an electrical field, it will turn its head towards the source of the field and investigate further.

The ampullae of Lorenzini are also used by sharks to navigate their environment. They can detect the electrical fields generated by the Earth's magnetic field, which helps them to stay on course when they are migrating.

The ampullae of Lorenzini are a valuable sensory tool for sharks. They help them to hunt, navigate, and avoid predators.