Mounted by a Monster: Whale Shifter

Annabelle has only one job, help her boss cheat the casino whale out of millions of dollars on his luxury yacht. Her boss has underestimated his target, and Moby discovers the cheating. When he goes to leave the yacht, Annabelle thinks he must be crazy as they're miles out from shore. He can't possibly be stripping off his clothes to dive into the ocean? What's he going to do, swim all the way to shore? Annabelle quickly learns that he's got a whale of a secret, and a plan for revenge.
A plan that includes her. This paranormal erotic short story is about 4, 300 words.