Victor Vescovo is leading the first-ever manned expedition to the deepest point of each of the world's five oceans. In conversation with TED science curator David Biello, Vescovo discusses the technology that's powering the explorations -- a titanium submersible designed to withstand extraordinary conditions -- and shows footage of a never-before-seen creature taken during his journey to the bottom of the Indian Ocean.

Victor Vescovo: What's at the bottom of the ocean -- and how we're getting there

What's at the bottom of the ocean -- and how we're getting there

Venturing to unexplored ocean depths, a titanium submersible unveils marine mysteries, promising a new era of undersea exploration.

Discovery in the abyss: every dive reveals new species, opening doors to untouched ecosystems isolated for billions of years.

With technology rivalling SpaceX, the quest to the ocean's deepest points challenges the final frontiers of Earth's uncharted territories.