This unit was designed for salvage missions at the bottom of the deepest oceans—while Stark's conventional suits function underwater, they were noisy, inefficient, and they leaked. The exact composition is unknown; it is assumed to be composed of the same layered "flex-metal" micro-scale suit tiles fabricated by genetically engineered metal-affinity bacteria which assemble themselves in specific orderly arrays and then expire, leaving behind various metallic deposits which form all the metal shapes and micro-electronic circuits. A new aligned-crystal production process allowed the construction of a large, semi-spherical headpiece, as transparent as glass. This unit possessed several ocean-specific weapons, such as the electric field of an electric eel, a camouflage 'ink cloud' and small 'manta ray' torpedoes. It also comprised an inner "Escape Suit" that could be jettisoned from the main suit in case of emergency (this inner suit possessed a Unibeam, 2 torpedoes, and the holding bay). Functions were controlled by cybernetic interface..This is a very interesting addition to the Iron Man arsenal of suits.