So you want to be a dolphin. Or perhaps you want to be a competitive swimmer. Or maybe you just want to swim faster.
Unless you are really lucky (or would that be unlucky?) you probably weren’t born with webbed feet or toes, so you will have to look at other ways to increase your speed in the water.
The best way to increase your swimming speed, is to increase the flexibility of your ankles. Flexible ankles act like flippers, which will help to propel you through the water faster.