A "diver backpack" I designed while working on Futuredude Entertainment film and television projects.
The idea was that this would contain both oxygen and water jet propulsion units, as well as some capability for precise maneuvering while working underwater.
The hard suit was an existing model and mostly used just for illustration purposes.
Here are a number of evolutions of the backpack as the design work progressed and evolved.
And finally, the MK5 with more exotic looking vectoring nozzles.