This is the very cleverly designed LEGO Clockwork Aquarium built by LEGO fan heed Smiley. When you turn the crank,the fish swim around, a crab jumps, or a starfish turns as the fish pass. How approximately that! The set is currently in need of votes on the LEGO Ideas website whether you'd like to see it considered for production. Which I do. I just made ten email accounts so I could vote 10 times,that's how much I care. "You care approximately the dumbest stuff." I care approximately you. "Well I guess not everything is the dumbest." That's what I thought.
Keep going for a video tour.
Source: geekologie.com