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1. Here's a fish swimming upstream. Nothing unusual about that. What's unusual is that this particular fish is *dead*. Vortices in the water as it flows past the fish cause the fish's body to flex, maintaining orientation and actually propelling it forward. (D. N. Beal et al 2006 J. Fluid. Mech.)

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That is obviously difficult since classical binary computers and animal brains are extremely dissimilar in the way they process data. Back of the napkin you'd need 9 gates to represent each neuron connection. Probably hundreds of FPGAs to emulate a dead fish. Nevermind a live one.

this is really cool, so as I understand it, just the structure of the fish's body makes it swim if force is applied to it so if it has no energy, all the energy must be transfered from steam of water to the body of the fish? evolution for the f'ing win!

That fish video is fascinating. It’s easy to see how people observing this could believe it implies some kind of perpetual motion. Its complexity defies even most college physics courses. What I want to know is: when are we going to see flexible submarines? 🙂

Awesome. I’ve not seen the fish-body-vortices thing verified before. Austrian theosophist and naturalist Viktor Schauberger described this phenomenon back in the early part of the 20th. It was a base starting point for his ideas on vortex dynamics in general.

Where'd you read that he was theosophist? More like his work was corrupted by theosophy. He had curious ideas about esoterica like blood memory that he learned from folklore as a forester, but he wasn't part of any mystical groups. His works were almost all practical, with very little theory behind.