New study says more than 99% of the deep sea is still a mystery

A new study claims that we know more about the surface of Mars than we do about our own oceans. Despite covering over 70% of Earth’s surface, the vast majority of the deep sea remains unexplored. In fact, scientists have now revealed that humans have directly observed less than 0.001% of the deep seafloor.

That astonishing figure comes from a new study published in Science Advances, which analyzed data from roughly 44,000 deep-sea dives conducted since 1958. To put that into perspective...