See the National Underwater Robotics Challenge web site for information on the event in Arizona June 8th through 10th. They offer a remote underwater vehicle kit for $250.
There will be a live video stream June 9 at 8pm MST and will continue to until about 2am MST June 10. The video will come from both the ROV and in the pool with event cameras in and around the submarine. Once the video has been processed and mixed poolside by Arizona State University’s Applied Learning Technologies Institute, it will then be channeled to Chandler High School’s television studio, where it will be broadcast to a view gallery and simultaneously sent to a server at ASU where it will be webcast to the world.
Related: La Vida Robot – great Wired article on the Carl Hayden High School – Unmanned Water Vehicles – Northwest FIRST Robotics Competition
Video of the ROV in a box:

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