Designed to have an appearance similar to a fish including the way the colors are set up.
Primarily electric and naturally buoyant to bring it to the surface when not actively diving.
Small diesel engine for recharging batteries while surfaced.
3 sets of diving gear, and a dive chamber separate from the main control area.
360 field of view for the pilot, and 5 spotlights for visibility.
Simple design for exploring the ocean floor.