[Molly looks like somewhere along the way he became part fish given how he's gaping wide-mouth and, just a little bit, shook. He blinks it away, holds up his hands in a placating "okay crazy lady" gesture and goes back to focusing on getting the wind to catch the sails enough to push them towards land and away from the sharks.

As soon as the little boat hits the sandbank, Molly lifts up his coat so it doesn't drag in the water, and sloshes up to the drier shore.] What the hell was that? What did you do to it? That is... I'm not an expert but I've never seen anyone do a Polymorph by biting something.

[He's actually never seen a Polymorph spell period. He only knows what they are because he's surrounded by arcane users, but he feels like he would have been informed there was biting involved. That's a hell of a thing to forget.]