Benjamin, on his first voyage with Captain Mike, goes to a brothel. We see several prostitutes standing around in lingerie, staring down at Benjamin and other men. We see Benjamin under the covers with one woman (we see movements of the sheets, and the woman making a few sexual remarks, surprised that someone Benjamin's "age" has that much energy). Its implied he becomes a regular at the brothel.
In Russia, Benjamin begins an adulterous relationship with a married woman. We see them talk late at night having tea, and then their talks turn into sexual rendezvous. They are both in nightgowns, kissing at her door and going inside (sex implied).
Daisy's ballet show consists of dancers in revealing, tight costumes, dancing sensually. She talks about how sex is a regular activity for her group, and that there are alot of lesbian dancers. She dances very sensually for Benjamin, and asks him for sex (he declines). She is seen in skimpy underwear after a show (changing clothes).
Benjamin and Daisy begin a passionate relationship that lasts for many years, although they never marry. They are seen undressing, kissing and lowering onto a bed, swimming nude (only their silhouettes seen), and having naked sex on a beach (we see this from a distance, their bare backsides partially seen). We see them in stages of foreplay on a mattress, and much later, when Benjamin is about 20, and Daisy in her late 50s, they have sex once, even though she is already married. We see her from behind in underwear, getting dressed.
Benjamin talks about his body changes, how hair is growing "in places." A few references to sex are made, as well as a few jokes. Queenie and her husband, Tizzy, kiss and embrace in bed. Benjamin talks about nights he'd have to sleep upstairs so Queenie and Tizzy could most likely have sex.