Did you ever see the old show Man From Atlantis? In it, the star had webbed fingers that helped him swim like, well, a fish. And while it might be difficult for mere mortals to have the same swimming ability as the titular star, you can have webbed fingers for swimming.
Trendbox offers Webbed Swimming Gloves ($12, Amazon) that gives you webbing between your fingers for your favorite aquatic activities. They come in you choice of color and size.
While they certainly look cool, I am not sure how effective they are in actual use. And no doubt it would take a little practice to get used to them, since most swimmers don’t typically swim with their fingers spread out. But with the right effort and application, who knows?