Researchers call for expanding exploration efforts and utilizing emerging technologies to increase access to the deep ocean.

Despite the deep ocean floor coating some 66% of our planet's surface, we haven't explored 99.999% of it, study finds.

along with the current condition of the sea floor. The film's message: "If we save the sea, we save our world." "Ocean With David Attenborough" premieres June 7 on National Geographic and begins ...