Dome-shaped dimples allow the crocodile to determine the direction of the stimulus to create a map of its surroundings, including both steady-state and dynamic activity.
Crocodiles hunt by floating underwater with their eyes and snout above the surface and sensing prey underwater. The crocodile has tough, leathery skin for protection but lacks touch sensitivity. To counter this lack of perception, small dome-shaped dimples cover the entire body of the crocodile that can detect prey movement in the water. The downward flex of the dome allows the crocodile to determine the direction of the stimulus to create a map of its surroundings, steady-state (such as water current), and dynamic activity (such as approaching fish). This natural design could help inspire sensors on ships, municipal water systems, or fluid-based manufacturing processes.
