Artificial Gills Rebreather|Artificial Gills To Breathe Underwater|Do Artificial Gills Work|Artificial Gills Depthbr br #levelup4u|| #informativebr br Artificial gills are unproven conceptualised devices to allow a human to be able to take in oxygen from surrounding water. ... Natural gills work because nearly all animals with gills are thermoconformers (cold-blooded), so they need much less oxygen than a thermoregulator (warm-blood) of the same size.br br WATCH: There's a Reason You Love to Watchbr Don’t forget to like, Subscribe & Comment.