Abstract: A water environment robotic system that includes a control station, an underwater robotic vehicle, and a water-surface robotic vehicle. The underwater robotic vehicle is in communication with the water-surface robotic vehicle and the water-surface robotic vehicle is in communication with the control station. Accordingly, the water-surface robotic vehicle can act as a relay between the control station and the underwater robotic vehicle. The water-surface robotic vehicle is further capable of detecting the position of the underwater vehicle and automatically adjusting the position of the underwater vehicle in order to maintain general vertical alignment between the two vehicles.