Requested by "Robert-Butler-2" of DeviantArt (Yes, he's got a new account there)
It's the Powerpuff Girls (Blossom, Bubbles, and Buttercup) along with a character named Hayley in her PPG form scuba diving underwater.
Robert said this would be his last request for the summer centering around this subject. Let's hope so.

Powerpuff Girls belong to Cartoon Network