What is another word for deep sea?
Pronunciation: [dˈiːp sˈiː] (IPA) 
Deep sea is a term used to describe the part of the ocean that extends beyond the continental shelf. It is also known as the abyssal zone or the ocean depths. Synonyms for deep sea include the oceanic zone, the bathyal zone, and the hadal zone. The oceanic zone is the largest and deepest part of the ocean, while the bathyal zone is the region between the continental shelf and the abyssal zone. The hadal zone is the deepest part of the ocean, found in deep ocean trenches. Each of these terms describes different parts of the deep sea, showcasing the vastness and diversity of the underwater world.
