GraviTrax%20JUNIOR%20allows%20children%20from%203%20years%20old%20to%20learn%20about%20building%20marble%20circuits!Your%20child%20themes%20his%20circuits%20and%20immerses%20himself%20in%20a%20magical%20and%20colorful%20world!%20Dive%20into%20the%20heart%20of%20the%20ocean%20with%20this%2033-piece%20decoration%20expansion%20set!%20A%20recharge%20to%20explore%20the%20aquatic%20world%2C%20discover%20the%20vegetation%20and%20animals%20of%20the%20seabed!Build%20a%20circuit%20and%20modify%20it%3A%20GraviTrax%20rebuilds%20itself%20endlessly!%20Requires%20at%20least%20one%20GraviTrax%20JUNIOR%20Starter%20Set.Looking%20for%20GraviTrax%20gift%20ideas%20in%20the%20building%20sets%20department%3F%20They’ll%20love%20the%20GraviTrax%20JUNIOR%20My%20Ocean%20Decoration%20Set.%20It’s%20the%20perfect%20gift%20for%20anyone%20who%20loves%20GraviTrax.%20Perfect%20for%20birthdays%2C%20holidays%2C%20or%20any%20special%20occasions.