Depth map
Five working zones from sunlight to trench.
Zone boundaries vary slightly across scientific and educational sources. These pages use a consistent publishing convention and state that convention openly.
01Bright to dim natural sunlight02Fading sunlight; too little for photosynthesis03No sunlight04No sunlight05No sunlight
Sunlight Zone
Epipelagic · 0–200 m
Twilight Zone
Mesopelagic · 200–1,000 m
Midnight Zone
Bathypelagic · 1,000–4,000 m
Abyssal Zone
Abyssopelagic · 4,000–6,000 m
Hadal Zone
Hadalpelagic · 6,000–11,000 m