Gills

How do fish breathe underwater? Find out in this BrainPOP UK movie, as Tim and Moby give you the inside scoop on gills. In this educational, animated movie you’ll learn about what gills have in common with human lungs, and why not all aquatic animals have them. You’ll also discover what it is that fish are actually breathing (and it isn’t water!); what diffusion is; why breathing underwater isn’t very efficient; and how something called “countercurrent exchange” makes extracting oxygen from water a little easier. As far as humans are concerned, we’re just going to have to stick to holding our breath!

Related movies: Respiratory System, Fish, Cnidarians, Amphibians

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