At around 3,300 meters (2 miles) below the surface of the ocean off the coast of Alaska, where the warm light of the Sun never penetrates, an NOAA Ocean Exploration remotely operated underwater ...

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 by 2027.

For underwater photographer Brian Skerry, there are good days. The sun shines, the water’s clear, the surface is calm, the whales come, and Skerry can slip into the ocean fast enough to ...

THE Earth’s ocean could one day turn purple – and scientists say it used to be a totally different colour. The Earth’s seas ...

Learn more about ocean life in Sea of Hope: America’s Underwater Treasures ... and a snorkel. The sun shimmered on Midway Islands, a remote speck of reef halfway between California and China.