If you’ve been shopping around for a submarine, we’ve got one to show you. The Deepflight Super Falcon Mark II Submarine ($1.7M) fits two people and looks like it could go from water to air with no problem. The Mark II measures 17 feet long, sports a bubble port for each of the passengers, and can go as low as 400-feet. Additional features include a cruising speed of 2-4 knots, and a power plant that is centered around a high-efficiency DC drivetrain and underwater lithium-iron-phosphate battery pack. The clean and quiet operation and low electric signature make it safe to operate around swimmers and large marine animals.