#26534 Joaquin Sorolla y Bastida (1863-1923)

The picture has something of this: water, people, dug-out pool, river, motion, swimming, recreation, nude, swimmer, man, woman, wet, outdoors, daylight, reclining, rock.
Perhaps it’s a painting of three naked men laying on a beach next to a body of water and one of them has his back to the camera as if he is laying down.