Using an iPad to control your music system? Been there, done that. Using an iPad to control a submersible that also records underwater video in 1080p? Oh, the possibilities. Aquabotix is giving Jacques Cousteau wannabes the ability to shoot the watery depths all the way down to 150 feet as its underwater doohickey -- the HydroView -- officially goes on sale. Measuring 14.6 x 19 x 7 inches and weighing nine pounds, the submersible comes with LED lights, a three-hour battery and a top-side box that connects with a cable teth