with its own swim bladder which is a cylinder that compresses and decompresses air with a piston castleman says the compartments that usually would be air tight we filled them with oil this allows sophie to reach depths of sixty feet since its internal pressure is controlled much better than other aquatic robots right now sophie is remote controlled but in the near future mit scientists are hoping a lauren handsome version of sophie would be able to use a machine of vision to lock on to an individual fish and follow them around without raising suspicion. we believe with like we've builds in this paper we will actually be able to get a different view on that credit life and also have a credit life have a different view on the arts because we can mimic emotional. to some extent and we have a different appearance to feel safe the way our fish moves as sophie proves to be successful it could help scientists better understand schooling dynamics and fish species living and on a healthy oceans and order to prevent things like extinction and washington actually banks are to. a lot of our show here