What is a six letter word that is at the bottom of the sea?

The six-letter Word that is at the bottom of the sea is "abyss." The term "abyss" refers to a deep or seemingly bottomless chasm, typically used to describe the deepest parts of the ocean. In oceanography, the abyssal zone is the region of the ocean depths, typically below 2,000 meters, where conditions are extreme and sunlight does not penetrate.