Question: what are the 4 layers of the ocean?
Answer: Epipelagic Zone (Sunlight Zone)
Mesopelagic Zone (Twilight Zone) ... 
Bathypelagic Zone (Midnight Zone) ... 
Abyssopelagic Zone (Abyss) ... 
Hadalpelagic Zone (The Trenches) The Hadalpelagic zone is also called the Trenches and is found from the ocean basin and below. ...