Cold Skin is a 2017 French-Spanish science fiction-horror film directed by Xavier Gens and based on the 2002 novel of the same name by Albert Sánchez Piñol.

In 1914, a young Englishman travels to a remote island in the South Atlantic to work for one year as a weather observer.

After the unnamed man explores the island, he finds the diary of the previous meteorologist with drawings of strange sea creatures.

Gruner gives the man the name "Friend" and he explains the creature will not leave her master no matter how cruel he is.

Friend grows to like the captive female creature (treated as a sex slave by Gruner) and names her Aneris.

Once several boxes of dynamite have been retrieved, Gruner does not pull up Friend and stops pumping air to him.

Friend and Gruner form a plan to lure as many sea creatures to the lighthouse as possible before setting off the dynamite, believing that the show of force will kill many and drive them off.

Later that evening, Gruner reveals that he found Aneris trapped in his net in the sea and freed her from it.

The website's critical consensus reads, "Cold Skin exerts a strong visual pull, even if all that icy atmosphere isn't a truly satisfying substitute for a story that dares to go somewhere different.

"[9] David Ehrlich of IndieWire gave the film a 'C+' rating, deeming it to be "a gruesome but uncommonly philosophical creature feature" hinting at "a Lovecraftian ambition that it never fully assumes for itself".

[10] Dennis Harvey of Variety assessed that the film "offers a good-looking and well-crafted if familiar chunk of creature-siege horror".