Chemosynthesis
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In biochemistry, chemosynthesis is the biological conversion of one or more carbon-containing molecules and nutrients into organic matter using the oxidation of inorganic compounds or ferrous ions as
Venenivibrio stagnispumantis gains energy by oxidizing hydrogen gas.
Black Smoker
Fauna on hydrothermal vents
Riftia
Videos
Riftia is a monotypic genus of polychaete annelid worms in the Siboglinidae family, which contains the sole species Riftia pachyptila, commonly known as the giant tubeworm or giant beardworm.
Chemosynthesis
…may have also been the first type of metabolism that evolved on Earth, leading the way for cellular respiration and photosynthesis to develop later. Giant tube worms use bacteria in their trophosome to fix carbon dioxide (using hydrogen sulfide as their energy source) and produce sugars and amino acids. Instead of…
Campagne HOT Vers géants
The red branchial plumes are supported by the white obturaculum, which also seals the tube when the worm retracts itself.
Riftia pachyptila being extracted out of its tube
Riftia on the Eastern Pacific Ridge, 2,630 m (8,630 ft) depth