This is the Stingray robo-sub, one of the competitors in the tenth Autonomous Underwater Vehicle Competition, which is taking place at the Space and Naval Warfare Systems Center in San Diego this weekend. Rather confusingly, one of its rival's entries, from the U.S. Naval Academy, is known as Project Stingray, which you can see below. It's not as sexy as the one above, although the Academy boys get points from me for looking buff in their shorts.

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