Unusual phenomena beneath the ocean's surface have captured attention in recent years. Reports from military personnel describe massive objects moving at extraordinary speeds underwater.

When Palacio and her team examined coral reefs after the 2015–2016 heat wave, they found that particular corals called ...

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

The Gribshunden, King Hans of Denmark and Norway's flagship, sank off Ronneby, Sweden, in 1495 during a political summit in ...

As global reliance on subsea infrastructure grows, so do the risks. Discover how safeguarding undersea assets opens new ...

Kayaking in glowing waters is a hot, new travel trend. Here's a collection of destinations in America to scope out the ...

The Greek islands of Santorini and Amorgos have been rattled by earthquakes and tremors since Feb. 1, with the strongest being 5.3 on the Richter scale.

The deepest regions of Earth's oceans, known as the abyssal and hadal zones, lie at least as far under the water's surface as Mount Rainier's peak rises above the land surface. These great depths of 4 ...

What looks like a spider but isn’t one, lives underwater and breathes through its legs? That would be the mysterious sea spider. With over 1,300 species living in every ocean, these marine arthropods ...

A project is underway to investigate the production of “dark” oxygen further. Understanding the phenomenon better could help space scientists find life beyond Earth ...