Scientists have now made the most comprehensive tally yet of deep-sea exploration — 43,681 dive records dating back to 1958 — and found that humans have directly seen less than 0.001% of the deep ocean floor, an area roughly the size of Rhode Island, leaving the vast seafloor across 66% of Earth’s surface essentially unobserved.
Scientists have detected a giant fan-shaped structure buried beneath the East Antarctic Ice Sheet, suggesting the frozen continent may be hiding the geological scars of the breakup that helped separate Antarctica from Australia