New research shows ancient tropical oceans once held more oxygen than cooler regions, reshaping where early life could survive and evolve.

A new study suggests the world's oxygen-depleted seas may have a chance of returning to higher oxygen concentrations in the ...

Here’s a look back at a sampling of long-gone island oases we wish we could duck into from the cold this winter.

Stronger El Niño events are more likely when springtime surface waters in the western Pacific Ocean become unusually salty, a ...

"The structures that we were able to identify in the images are clearly the mouth of a river into an ocean." The post ...

Scientists studying ancient ocean fossils found that the Arabian Sea was better oxygenated 16 million years ago, even though ...

Ex-Tropical Cyclone Luana has done something tropical cyclones don't usually do. It gained strength over land three days ...

Miami sees sunshine nearly 250 days on average each year, but its tropical climate also results in awe-inspiring downpours ...

Experience the serene beauty of a tropical beach with this relaxing nature video. Featuring a traditional Thai longtail boat gently resting on crystal-clear turquoise waters, the scene is set against ...

Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.

Wet conditions are expected to dominate in the northern part of Peninsular Malaysia and Sabah in the first half of this year, ...

In Cancún, Mexico, modern resorts sit right on the edge of the Caribbean Sea. It’s a tropical city built for escape.