UGEARS 3D Puzzle Mechanical Aquarium – Creative 3D Wooden Puzzles for Adults Driven by a Spring – Aquarium Wood Model Kit – Unique Wooden Puzzle – 3D Puzzles for Adults and Kids Building Kit

This new Mechanical Aquarium 3D puzzle from UGEARS is an ingenious saltwater fishbowl with two tropical fish chasing each other around in a forest of macroalgae fronds hiding a seahorse.
To date, all UGEARS model making kits have been propelled by rubber band motors, but the mechanical aquarium science kit is driven by a spring for longer action and greater longevity.
As a result, the fish and algae rotate simultaneously and in parallel at different speeds and different directions, simulating the smooth, undulating rhythms of underwater plant and animal life
Product Dimensions 9.25 x 9.25 x 7.87 inches