About

The Deep Ocean

One of the least accessible environments on Earth. Fathomdeep explores what it would take to reach the bottom: reliably, repeatedly, and on demand.

The Environment

Extreme by Any Measure

Pressures exceed 1,000 atmospheres in the deepest trenches. Temperatures hover near freezing. Light is nonexistent. The logistics of operating in this environment represent one of the most demanding engineering challenges on Earth.

The Challenger Deep, the lowest known point in the ocean, sits approximately 11 kilometers below the surface. Fewer humans have visited it than have walked on the moon.

Depth diagram or ocean imagery

Potential Uses

Why Send Anything Down There?

Fathomdeep explores what it would take to reliably transport objects to these depths and return them safely. Potential applications span science, research, and symbolic use.

  • Scientific experiments exposed to extreme pressure and temperature
  • Symbolic journeys: sending meaningful objects to the bottom
  • Material testing under real deep-sea conditions
  • Pressure exposure studies for new materials and devices
  • Biological sampling support and payload delivery
  • Geologic and sediment interaction research
Capsule or hardware photo
11 km Depth of Challenger Deep
>1,000 atm Pressure at full depth
2°C Avg. deep ocean temperature