Black Smokers
Depth: 3,650 m · Midnight Zone
Black smokers are hot springs on the seafloor, here in the Rift Valley of the ridge. Dark, mineral-rich water shoots out of their vents like smoke from a chimney. Amazingly, an entire community of animals lives here without any sunlight at all, including long white tube worms.
For scientists
At black smokers an entire food web lives without sunlight: bacteria draw energy from hydrogen sulfide (chemosynthesis) instead of light. The white tube worms have no mouth and no gut; instead such bacteria live inside them as symbionts and feed them. The water from the vents is over 350 degrees and stays liquid only under the high pressure.
Source: Wikipedia
🌊 Swim straight to it in 3D