Flashlight Fish: The Original LiDARHow this creature uses biological headlights to see in the dark.

From the show

Nature Solved It First

The splitfin flashlight fish has a unique way of navigating the pitch-black ocean: a pair of light organs under its eyes. By controlling the light emitted by symbiotic bacteria, the fish creates a blinking effect that functions like a natural sonar system, but with light. This 'photolocation' allows it to detect objects and hunt with remarkable precision. Researchers are now studying this biological marvel to improve how drones navigate in environments where GPS is unavailable.