YouTube: https://youtube.com/watch?v=aJ23wXSsgJI
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Duration:15:00
Uploaded:2026-06-23
Last sync:2026-08-05 02:00
CORRECTIONS!
In this video I say that the first ancestor of all bony fish was a freshwater fish. It turns out that this is something that the Fish Paleontologists are actively arguing about!

I also think I missed an opportunity in this video to discuss the difference between the osmotic pressure and ion gradients, but I'll be honest...I do not know a good, simple way to explain it!
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