Deep sea bottom - Coastal Wiki - Bottom of the sea floor
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The seabed is the bottom of the ocean. Contents. 1 Structure. Depth below seafloor. 2 Sediments. Terrigenous and biogenous; Hydrogenous and. The Mariana Trench or Marianas Trench is located in the western Pacific Ocean about At the bottom of the trench the water column above exerts a pressure of The trench is not the part of the seafloor closest to the center of the Earth.