How about our eel vids...
https://www.youtube.com/watch?v=Z-czlAYmvzM
https://www.youtube.com/watch?v=HLi5-GBRMNk
https://www.youtube.com/watch?v=E1s9DagZzW8
One of the neat things about nature is that it's had a long time to figure things out. Especially under water. Here, nature has figured out how to reduce all the "nutrients" to very low values, and also how to feed every aquatic animal (as well as consume half the world's CO2, and produce half...