The Abduction of Deianeira by the Centaur Nessus Louis Jean François Lagrenée (1725-1805)

The picture has something of this: people, woman, water, group, recreation, man, two, nude, girl, sea, swimming, three, ocean, veil, wear, child, enjoyment.
Perhaps it’s a painting of a group of people in a body of water with a man on the other side of the painting and a woman.