Ocean Life - Ampullae of Lorenzini: the shark's electric sixth sense

Cartilaginous fishes like sharks and rays navigate the ocean using a specialized sensory system known as the ampullae of Lorenzini. These organs consist of an intricate network of mucus-filled pores embedded in the animal's skin. Evolving from the ancestral lateral line organs of early vertebrates, they function as sensitive electroreceptors capable of detecting subtle electrical fields. While most bony fish and land vertebrates have lost these organs, they provide sharks with a remarkable way to sense their surroundings.

Source: Wikipedia