After several painful surgeries and implants of new organs made from stem cells, the aquanaut was ready to be the humanity main weapon and hope. At the beginning, the operation success was very low, around 15% -20%. So all the volunteers could be considered true heroes, because for the few to succeed and became aquanauts, many of them remained crippled for the rest of their life, or dead.
The aquanauts have been implanted gills and their lungs were modified with a special film, that could collect the oxygen from the water and delivered it to the alveoli.
In addition, their eyes were modified with a supplementary reflective area in their back, so now they can see 3 times better in low light environments than a normal human.
Their back muscle were improved to sustain the “dolphin” style of swimming, that is the fastest and the lower energy consumer underwater swimming style, adapted to human anatomy.
Between the fingers of their hands and foots where implanted an extra skin, so they can have more mobility underwater.
On their forehead, the medics implanted in their skin several electric-receptors connected to their brain, that could detect the surrounding living organism’s electric signature. An essential addition in muddy and opaque waters, where their sight was useless.
On the back of their heads, was implanted a special brain interface that connected to a powerful computer and a flexible column that linked all the components of the battle backpack.
The gel battle backpack and the special gel diving suits, that function as an armor as well, was used only during the missions. In their underwater base the aquanauts could swim freely in a oxygen rich water, that had 36 oC and was constantly purified.