I sorta did this for real long ago...
About 25 years ago, I won a trip to Grand Cayman. We went in July, because the original Mrs. Stoo was about 6 months pregnant at the time, and we figured one Junior arrived, our lives would be over. She snorkeled unless we were really shallow, and then I would stick her on my octopus and tow her around.
She bought a new maternity bathing suit before we left. When I first saw her I burst our laughing. It was bright red, with a diagonal white stripe. She looked like an inflatable dive float. It hadn't even occurred to her when she bought it...