What is the name given to ocean zone that made up of sea floor?

The ocean zone that is made up of the sea floor is called the benthic zone or benthos. The benthic zone includes all the organisms that live on or near the bottom of the ocean, from the shallowest waters to the deepest parts of the abyss. It encompasses a wide variety of habitats, including continental shelves, seamounts, hydrothermal vents, and deep-sea trenches.