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How do you keep animatronic characters moving in chemically-treated water? This was the engineering challenge Disneyland faced with the colorful and eccentric props utilized in the theme park's Finding Nemo Submarine Voyage ride. The animatronic crabs, for example, were recently sent for a rebuild cycle, in which they were inspected to ensure that they are physically and operationally in good shape - and this included an assessment of the bushings on their moving appendages.