https://www.whoi.edu/ocean-learning-hub/ocean-topics/how-the-ocean-works/ocean-zones/abyssal-zone/
Jun 11, 2026 · The seafloor and water column from 3,000 to 6,500 meters (9,842 to 21,325 feet) depth is known as the abyssal zone, or the abyss. Sunlight doesn’t penetrate to th