About 35 minutes into Cracks, Eva Green leads her students to the lake in the middle of the night. Eva disrobes and we see her ass and her left breast. We can maybe see more when she dives into the water. Eva’s students follow her and also strip. The only student they focus on getting undressed is Maria Valverde but I believe all of the older students including Juno Temple, Imogen Poots, Clemmie Dugdale and one other girl are topless. There are some shots of the girls underwater but those scenes are dark.
At around 80 minutes, Eva unbuttons Maria Valverde’s shirt. Eva proceeds to kiss an unconscious Maria on the lips and then continues down her body before the scene ends. Again, the scene is dark, but you may be able to see Eva kissing Maria’s right breast.