Swimming object

This project was about searching for an alternative to move trough water. I was wondering why all the vehicles which move in water are powered by a motor with a propeller. Inspired by the movement of jellyfishes and octopuses I made several swimming objects. 

My silicon fishes are making pulsing movements creating a water flow which is directed by two valves. This movement is powered by a water pressure driven muscle which is controlled through washing machine valves to a controller.