The French man had separated himself from the Joestars by accident. Then that stupid boat dissipated; it was actually a Stand. Polnareff had a nice dip in those waters.

That is, until you saved him, a little merfolk on their daily swim.

"What...are you?" Good job, Polnareff! He doesn't sound like an ass at all! But his baby blue eyes can't help looking over how elegant you were in those tranquil depths.