While the mission is taking place on a ship in Hawaii, the SUBSEA mission control is actually located in Rhode Island, a distance of over 5,000 miles. By live streaming the underwater cameras and data collection to the team across the globe, it will inherently build in a time delay. By testing out this system on Earth in this way, it will help inform other missions about how challenging data relay might be when it’s attempted off planet. If we can’t send high resolution video to another location on Earth for example, then how can we expect to do it at Mars? Since it is likely that a first human mission to Mars could include remotely operating a rover or scientific instrument of some kind from orbit, tests like these can help build out that much needed infrastructure, long before it’s needed on a mission to Enceladus.