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depth of oceansevents and knowledge · 2022-09-14The average depth of the oceans is about 4 km. More precisely the average depth is 3,688 meters (12,100 ft). Nearly half of the world's marine waters are over 3what is below the Surface of the ocean?events and knowledge · 2022-06-24Oceanographers usually divide ocean waters into separate layers, called zones, from the surface all the way to the seafloor. Zones are based on the amount of su