Scientists discover the first animal that doesn't need oxygen to survive in the environment
Researchers have made a surprising discovery of Henneguya salminicola, a microscopic parasite residing in salmon muscles, as the first multicellular animal that doesn't breathe oxygen. This parasite, related to jellyfish, has evolved to abandon aerobic respiration, shedding genes and cellular structures vital for it. This finding challenges the long-held belief that oxygen is essential for all animals.
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