Kentucky’s vast and unexplored cave systems are home to some of the most mysterious animals on Earth. From blind fish to ...

“The deep sea, outer space, and caves: Those are the only frontiers left,” says Coons, who does his exploring in a lightweight helmet with a small flashlight duct-taped to the brim.

Offshore flooded caves, so-called ocean blue holes ... believe such conditions may exist in pockets of liquid water deep beneath the surface of Mars or in a sea under the frozen crust of ...

Reaching up to 300m, Tasmania's sea cliffs are some of the highest in the world. Beneath the cliffs of Waterfall Bay is a vast network of underground caves carved out over several million years of ...

The caves once existed above the water line, but were flooded when sea levels rose. Deep within these underwater caves are formations which can only be formed in dry caves - spectacular sculptural ...

The glow can come from worms, in dark caves, such as in Dismals Canyon ... are found throughout marine habitats, from the ocean surface to the deep sea floor. Today, the glimmering power of ...