A U.K. startup wants to be the SpaceX of the deep sea, and hopes to establish a permanent human residence on the ocean floor ...

This is not the Amazon or any terrestrial jungle—this is a kelp forest, one of the planet’s most vital yet overlooked ...

Seagrass is crucial to the health of our ocean and provides food and shelter for a ton of animals. But this leafy green ...

If you’ve ever snorkeled in the ocean, you’ve likely been amazed by the stunning sea life—vibrant fish weaving through unique plants in ... fascination with this underwater world.

Beneath the surface of the Southern Ocean, vast volumes of cold, dense water plunge off the Antarctic continental shelf, cascading down underwater cliffs to the ocean floor thousands of meters below.

From the deck of a small blue-and-white boat, Bashiru Bangura leaned forward and peered into the ocean ... plants with flat, ribbon-like leaves — are one of the world’s most productive ...

This year, a new category, Macro, debuts, highlighting incredible close-ups of tiny marine life ... Houston Underwater Photographic Society, it’s a global celebration of creative ocean storytelling.