Judging from his tan, he must be a swimmer. Maybe her, too. That's a great way for older people to stay in shape, and it is working for them. My wife is a lap swimmer and I imagine her flirting with guys like him, that age but in good shape! Keeping the body in shape keeps the penis working!!
Both parties could do with wearing a lot less on the beach. At least she is trying to tan her beautiful natural tits. Superb shaved cunt. His pork sword is good size