Our Eternal Summer (2021)

A woman is seen waking up topless a few times. Her breasts are clearly seen for awhile.

A few quick scenes of a man and woman skinny dipping. It's dark so nothing is very visible. In one we briefly see their buttocks. In another they lie in the water on their backs - the woman's breasts can be seen (pubic region in shadow) and the man's semi erect penis is seen sticking out of the water (not very clearly).