I guess they're pretty cool Rube Goldberg machines. I don't think any biologist is moved by the notion of them being alive, but it's probably good marketing to get his designs some attention.

As an engineer, I'm super impressed with the design's ability to harness energy and put it to some use. It looks like it's mostly PVC and plastic bottles and tubing. Truly a brilliant design.

I wonder why he went with that scale. It seems like a simple enough machine that it would function, even if it was much smaller or bigger.