A lot of scenes with nudity, in which we see breasts and pubic area close-ups, several quite long sex scenes with moaning and everything.
There are a couple of scenes showing Claire's very small breasts, not sexual and mostly to make a point in the movie. There is a very brief male sexual scene with rear nudity. In one scene David dresses his wife corpse; there is some no sexual nudity but the scene could be disturbing. Two brief but strong sexual scenes between Claire and a male character; these include quick views of breasts fondled, nipples kissed, and a man's penis.