Is this creature similar to the carbon-based, creatures which
extract nutrients from volcanic sulphur hydroxide instead of photosynthesis?
If you are thinking of a different creature, I am as interested in
information on the new one as you are.
David
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Moderator's note: The creature responsible for fixation of inorganic carbon
into metabolically useful molecules by way of energy derived by the
oxidation of sulphide at hydrothermal vents and hydrocarbon seeps is
chemoautotrophic bacteria.