The slimy giant shipworm can grow up to 155 centimetres (five feet) in length, despite living a sedentary life in ocean sediment and apparently eating nothing more than the waste products of the micro-organisms that live in its gills. . . .
Researchers who analysed the creature found that although it had its own digestive system, this was shrunken and appeared to be largely redundant.
Instead, Kuphus Polythalamia relies on bacteria that live in its gills, which digest hydrogen sulphide -- a gas that smells of rotten eggs -- from the mud and emit traces of carbon.
The process is photosynthesis in plants, where they take carbon dioxide from the air, use the carbon to grow and expel oxygen as a by-product.
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