Actress Halle Berry just revealed her latest spine-tingler, but it isnt a movie.

Its a tattoo down her back and its quite prominent.

The Oscar-winning actress showed off the artful addition on Instagram Monday, writing, Who says Im not a mermaid.

HuffPost reached out to Berrys rep about the vine-looking (seaweed?) design to find out if the tattoo is permanent or perhaps for a role.