Parents need to know that Ammonite is a sexually graphic period drama that celebrates the power of love between two women. It is loosely based on the life of the British palaeontologist Mary Anning (Kate Winslet). Mary meets Charlotte Murchison (Saoirse Ronan) after Charlotte's husband arranges for her to work with Mary. The two women begin an affair, bringing them both happiness they haven't experienced before. Charlotte suffers from depression, but this romantic awakening gives her a new positive outlook. Both characters have a quiet strength about them. Mary, in particular, defies societal boundaries to make a great success for herself in her chosen field. That said, the movie also demonstrates the inequalities between the sexes during this time period (the 1840s), with Mary being prevented from even greater success. The sex scenes between Mary and Charlotte are graphic but not gratuitous. They perform oral sex on each other and masturbate. There's full-frontal nudity, including female genitalia and breasts. There is also a brief moment where a male character undresses and his penis is seen. Swearing is infrequent but includes "f--k" and "s--t." Characters drink alcohol socially, and one character smokes throughout the movie.