Currently human deep sea divers can work under the sea at depths of 450′. A few, very specialized dives can work as deep as 750′ for very short periods.
This technology is revolutionary as it lets a remote human operator, with electronic feedback that lets them actually feel objects the submersible robot is holding and see the ocean around them as if they were there. The prototype is capable of operating at 300 Meters, or close to 1,000 ft deep, and undoubtedly as the technology is further developed it will likely go much deeper. This is the very leading edge of robotic, Artificial Intelligence, and Virtual Reality Technology – and fundamentally changes the game in terms of underwater exploration, and eventual undersea habitation.