Researchers Document 9,533-Meter Methane-Fueled Ecosystem, the Deepest Animal Community Ever Found
Updated
Updated · en.clickpetroleoegas.com.br · May 28
Researchers Document 9,533-Meter Methane-Fueled Ecosystem, the Deepest Animal Community Ever Found
1 articles · Updated · en.clickpetroleoegas.com.br · May 28
At 9,533 meters in the Kuril-Kamchatka Trench, Mengran Du and colleagues documented the deepest animal ecosystem yet recorded, after using the final 30 minutes of a submersible dive to inspect an unexplored seafloor section.
The Nature study found tubeworms, clams and snails living on chemosynthesis: methane seeping through trench-floor fissures feeds symbiotic bacteria that convert chemical energy into organic carbon without sunlight.
Across 2,500 kilometers of two Pacific trenches, the team repeatedly observed similar communities between 5,800 and 9,533 meters, suggesting a continuous hadal life belt rather than isolated deep-sea oases.
The organisms survive near-freezing darkness and roughly 1,000 atmospheres of pressure, with reported cellular membrane adaptations; the dives were enabled by China’s Fendouzhe submersible, rated for depths beyond 10,000 meters.
The finding challenges the long-held view of the hadal zone below 6,000 meters as a biological desert and supports broader ideas of connected Pacific trench ecosystems and life in sunless oceans on worlds such as Europa and Enceladus.
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Breaking Barriers: Discovery of a Thriving Chemosynthetic Ecosystem at 9,533 Meters in the Pacific Ocean
Overview
In July 2025, a research team led by Mengran Du made a groundbreaking discovery by identifying the deepest known chemosynthetic ecosystem in the Pacific Ocean. Using a specialized submersible, they descended over 9,000 meters into a deep trench and found a vibrant, complex community of organisms thriving where life was once thought impossible. This discovery fundamentally changed scientific beliefs about the limits of life in extreme environments, revealing that even the planet’s harshest, darkest depths can support rich ecosystems. The finding opens new possibilities for understanding life’s resilience and the boundaries of habitable zones on Earth.