An excellent diving site, this incredible duo of caves is a favorite of both tourists and locals alike. The two caves—known as Cenote Dos Ojos—were created by two 70-foot sinkholes connected by a ...

Archaeologists have found a prehistoric human skeleton deep inside a flooded cave system on Mexico’s Caribbean coast.

The deep sea is a dark, cold place. It's just a few degrees above freezing, subject to immense pressure, and beyond the reach ...

A photographer captured this extraordinary site where whales' bodies lie in the shallows, with troubling repercussions for the deep oceans.

The caves in Oregon are incredibly diverse. From lava caves to glacier caves to sea lion caves, Oregon has it all.

These animals have different evolutionary adaptations that help them navigate, hunt for food and survive even in total darkness.