
Led by the Institute of Deep-sea Science and Engineering (IDSSE), CAS, the Global Hadal Exploration Programme team has uncovered chemosynthetic communities thriving at an incredible 9,533 meters deep—the deepest ever recorded!
These life forms don't rely on sunlight, but instead survive on chemical energy from hydrogen sulfide (H₂S) and methane (CH₄) seeping along deep-sea faults.
Dominated by tube worms, clams, and other mysterious species, these ecosystems reveal new metabolisms, unknown species, and a hidden role in Earth's carbon cycle.

Explored by the full-ocean-depth submersible Fendouzhe, these discoveries hint at a global network of chemosynthetic life corridors in the deepest trenches.
Dive into the unknown—the hadal zone is more alive and mysterious than we ever imagined!