Artificial gills (human)

Artificial gills are hypothetical devices to allow a human to be able to take in oxygen from surrounding water. This is speculative technology that has not yet been demonstrated. Natural gills work because most animals with gills are thermoconformers (cold-blooded), so they need much less oxygen than a thermoregulator (warm-blood) of the same size. However, there are exceptions, for example, Opah, Great White Shark and Tuna. It is currently unclear if a practical artificial gill could be created; however, creating a biological gill with genetic engineering is theoretically possible.

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