From a ballet of white-tip reef sharks to a cardinal fish releasing freshly hatched babies from its mouth, these underwater ...

Michael Patrick O'Neill has captured amazing photos of leatherback turtles, hammerhead sharks, mating seahorses, many living ...

The image took Honorable Mention in the Cold Water category of the 13th Annual Ocean Art Underwater Photo Contest. This year’s contest garnered thousands of entries from more than 90 countries.

Three-quarters of Venice, Italy was underwater on Monday as a storm brought ... Here are some of the most dramatic pictures from the overwhelming flood.