What are the 3 main vertical divisions of the ocean based in the depth and distance from the shore?

The three main vertical divisions of the ocean based on depth and distance from the shore are the intertidal zone, the pelagic zone, and the benthic zone. The intertidal zone is the area between high and low tide, where organisms are exposed to air at low tide. The pelagic zone encompasses the open water column, divided into layers such as the epipelagic (sunlit surface) and deeper zones. The benthic zone refers to the ocean floor, including the seabed and the organisms living there, regardless of depth.