While the two sites share some exhibits, there are quite a lot of differences between Echuca and Moorabbin. Echuca has the augmented reality climbing wall and the bee hive while Moorabbin has the bubble room and the rocket launcher. Moorabbin is bigger but Echuca is the much loved original TwistED Science. If you've only been to one and you have a chance to visit the other you should see the differences and similarities for yourself!