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38: Ellen Weatherford, Can Fish Drown, and Real Pokemon

Let's Learn Everything!

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The Evolution of Gills

Christian keeps a packet of old Bay seasoning in his wallet. Mark, you're looking so that's just the same thing. So at first you have like gills and lungs. And lungs allow you to breathe air from above the water. But eventually fish start to adapt to living in shallower and warmer water. They start to evolve lungs like in addition to gills.

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