Yeah I understand it's just the bouncing motion, but if I see something else in it that's a cool idea I've got to mention it  

I see, it could kind of look like that, but I just meant it to be the movement of brain in the jar. Since its suspended in fluid it follows the movements of the main body a little slower, if you see what I mean? :)

Almost looks like the brain is controlling it by yanking the brain stem. This amuses me. It's totally different than what I'd expect brains would do (via impulse or something).

Thanks, glad you like it! :D

I like that you went with green/lime water and bubbles. I couldn't think of another good color to use for th water besides blues. I like that the water looks gross, which is probably appropriate for water that's had a brain souping in it for a long time.