This concept has been discussed before. Is THIS one any different?
https://www.independent.co.uk/news/science/into-the-abyss-the-diving-suit-that-turns-men-into-fish-2139167.html
https://www.independent.co.uk/news/science/into-the-abyss-the-diving-suit-that-turns-men-into-fish-2139167.html