This is a cool video of a new experimental swimsuit called "oceanwings."
Similar to wingsuits for BASE jumping (skydiving), oceanwings have underarm and between the leg wings or spans of material that essentially gives a person float.
With oceanwings, instead of flying through the sky, you can fly through the water.
They are made by Aqua Lung which makes and sells professional and recreational scuba diving equipment.
For someone that loves the water, oceanwing diving looks beautiful, calming, and a heck of a lot of fun.
Not sure in the video, how the guy is breathing under water (since they don't seem to show any sort of air tank), but maybe he is just going on bated breath. ;-)