About 70% of this planet is underwater. As vast as the visible land is, the world that lives hidden from view, under our oceans and lakes, is vastly larger. Exploring it usually requires a pretty substantial amount of effort, but not if you have some money to throw at a remote controlled submersible craft equipped with a quasi-HD camera. The Submarine Camcorder is a 19″ L x 14 1/2″ W x 7″ H submersible craft in a marine-grade, hydrodynamic ABS housing. It has electric thrust and lift propellers, and is capable of forward/backward (5 kts forward; 1 kt reverse), left/right, and up/down movements. It is tethered to a surface boat by a 100ft. cable, though communication with the device is done through WiFi and an app installed on an iPad, or even a laptop. A 1280 x 720 feed is sent directly to the iPad, where you can take stills or record footage.
The virtual dashboard (an iPad’s motion sensors can also steer the sub) includes a joystick, camera controls, and displays depth, heading, battery level, and temperature data received from the sub’s built-in sensors.
The Submarine Camcorder is available from Hammacher Schlemmer, which tends to be more of an upscale/pricey sort of retailer. This time is no exception: the thing costs a whopping $6,300.