Flashlight fish have the ability to generate situation-specific blink patterns resembling a visual Morse code. Researchers have shown in laboratory and field experiments that the animals use these ...

Light behaves differently underwater. It shifts with depth, bends through murky currents, and separates into distinct ...

A midbrain region in fish combines light signals from the eyes and the pineal organ, a light-sensing structure often called the 'third eye.' ...

Although they don't have eyelids that they can close, fish do indeed sleep – and as is the case with humans, sleeping is crucial to their health. According to a recent study, though, city lights may ...

BRIGHT lights, big cities. Or are they? All is not as it seems in this stunning photo snapped from the International Space Station. The mass of white lights to the east shows Thailand’s capital ...