The artists also painted the fin in tones that aren't visible in the film's harsh black and white.
It also stars Willem Dafoe, and he and Pattinson go bonkers on an isolated island as lighthouse keepers—thus, where the weird comes in.
Yes, one of the most shocking parts of The Lighthouse involves a big mermaid vagina.
Or is she a personification of the sea, luring him to his demise? The actual mermaid anatomy also has unexpected secrets.
For one, her, uh, sexual organ is plainly visible and extremely large.
The film is shot in black and white, and it is visually stunning—so much so that cinematographer Jarin Blasche was nominated for an Oscar for his work on the flick.