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Scientists Have Explored Just 0.001% of Deep Ocean Floor, New Study Finds


A comprehensive analysis in Science Advances reveals that humans have explored less than 0.001% of the deep seafloor -- an area equivalent to merely one-tenth the size of Belgium. Oceanographer Katherine Bell and colleagues at the Ocean Discovery League compiled data from approximately 44,000 deep-s...

A comprehensive analysis in Science Advances reveals that humans have explored less than 0.001% of the deep seafloor-- an area equivalent to merely one-tenth the size of Belgium. Oceanographer Katherine Bell and colleagues at the Ocean Discovery League compiled data from approximately 44,000 deep-sea dives conducted between 1958 and 2024, finding that expeditions have concentrated overwhelmingly around waters near the United States, Japan, and New Zealand.The study exposes significant gaps in ocean exploration, with vast regions -- particularly the Indian Ocean -- remaining virtually untouched by direct observation. Much of the existing dive data remains inaccessible to scientists, locked away by private companies.

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