Nude model Edvard Perséus (1841-1890)

The picture has something of this: nude, people, woman, shirtless, man, recreation, sitting, portrait, water, girl, son, relaxation, two, naked, position, wear, barefoot.
Perhaps it’s a painting of a naked woman sitting on a rock next to a body of water with grass in the foreground and trees and bushes in the background.