National Geographic photographer Brian Skerry has logged more than 10,000 hours under water—but he's never before snapped a ...

The Greenland shark—the world's longest-living vertebrate—is most often associated with cold Arctic waters. However, a new ...

In a study published last month in the journal Ethology, researchers found that electric rays can scare away both tiger and white sharks by zapping them with powerful electric discharges. While ...