In 2371, Harry Kim and Jenny Delaney shared a gondola in a holoprogram based in Venice. While out of sight of Tom Paris and Megan Delaney, Jenny's sister, they conversed, and then Kim fell out of the boat.
Later, when Paris and B'Elanna Torres questioned Kim about the boat ride, he told them nothing had happened, that they had spoken and he'd fallen out by accident. Tom attributed Kim's mishap to being unprepared for Jenny's "voracious" actions. (VOY: "Prime Factors")