"We are committed." Scientists make stunning discovery after lost probe emerges from ocean depths: 'There's no going back' ...

The submersible vehicle that was lost at sea is part of a relatively new effort enabling tourists and other paying customers to explore the depths of the ocean, the vast majority of which has never ...

The ocean covers most of our planet, yet so much of it is still a mystery. Beneath the surface is a massive, dark world where ...

The deep sea has many new discoveries waiting for us, including a newly discovered species called the "death ball" sponge.

We're not far from where the expedition launched on Sunday. It was an hour and 45 minutes into the dive that the vessel lost contact with its mother ship. It's been lost and silent since then. Now, ** ...