The Seawolf from TTRobotix is a remote operated submarine that is capable of housing a GoPro Hero 3 or Hero 4. So essentially it is a GoPro submarine! The 2.5 foot sub will be available in both a freshwater and saltwater model. The Seawolf can dive to depths of 26 feet and travels at speeds of 2 mph on a 50 minute battery life. The GoPro version is set to be released in August. For your viewing pleasure we have included a video.