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Organisms have developed remarkable specializations to sense and navigate their environments. Fish are able to detect predators and prey using a network of mechanosensory hair cells, called the lateral line, that are located on the surface of the skin. These cells detect disruptions in their surrounding fluid and convert mechanical information to electrical impulses that are relayed to the brain. The mechanosensory hair cells of the lateral line are both structurally and functionally similar to those of the inner ear that mediate hearing and balance.