lateral line

Zebrafish detect water movement around them through signals sent to the brain by cells containing tiny hairs.

Acting Chief, Section on Sensory Cell Development and Function, National Institute on Deafness and Other Communication Disorders. Age: 38

From detecting gravity and the Earth’s magnetic field to feeling heat and the movement of water around them, animals can do more than just see, smell, touch, taste, and hear.

Animals have receptors for feeling gravity, fluid flow, heat, and electric and magnetic fields.