Narwhals have been caught on camera colliding with deep ocean monitors. The mysterious toothed whale species native to the ...

When animals nod off, they're most vulnerable to sneaky predators. But despite the risks, the need for sleep is so strong ...

In the South China Sea, near the Paracel Islands, the aqua-colored waters of an expansive shallow reef platform suddenly ...

Animals that navigate extreme conditions and environments have evolved to sleep in extreme ways. For a long time, scientists ...