DISCOVER THE DEEP
How far down will you go?
Travel from the sunlit surface to the deepest ocean trenches. An educational depth model, grounded in physics.
0metres
SUNLIGHT ZONE
Life in the light
AT THIS DEPTH
Life in the light
Photosynthesis occurs in the sunlit surface layer. Its depth varies with water clarity; 200 m is a broad teaching boundary.
- Approximate absolute pressure
- 1 bar
- Sunlight
- Sunlit
- Temperature
- Location-dependent
Educational model · pressure = 1.01325 bar + ρgh / 100,000, with constant seawater density 1,025 kg/m³. Compressibility and density variation are omitted. This is not a local depth measurement.
Explore the Mariana Trench NOAA: Light in the ocean