"Real-life mermaid," someone else added ... and fans recently noticed that she deleted a photo with Davino from Jan. 2. Sweeney herself has not confirmed or denied anything about her relationship ...

Sydney Sweeney is a real-life mermaid. Sweeney ... Sweeney laughed in the photo while wearing black sunglasses. “I think they call this a thirst trap,” she captioned the post.

Sharing one photo along with a video montage of short ... she's everything ️” and another simply adding, “real life mermaid.” ...