Called the Undersea Aquahoverer, this submersible can take two people down to a depth of 400 feet, which is plenty deep enough. The controls are fly-by-wire from either cockpit, both of which have carbon fiber seats, two digitally monitored oxygen systems and closed-circuit communications. Powering the 16.5-foot sub is a rechargeable 15kWh battery.
If you plan on purchasing one, get ready to cough up $1.5 million and get ready for the comprehensive training that comes along with it. To learn more, click the button below.