Halle Bailey, who plays Ariel in the remake, told Entertainment Weekly that while it was a "fun" scene to perform, the weight of the singer's hair made it challenging to execute.
"It was definitely hard, though, because my hair was really, really heavy," Bailey said, adding that her locs, which she's had since the age of 5, feel "like wool" when wet.
"It kind of almost doubles the weight when they're heavy," she said.
"So whenever I would get in the water, it would be heavy. So that one scene, it was really funny: that whole day we were trying to get it right, get it right, and finally they got a take that they really liked," Bailey added.
Bailey told The Hollywood Reporter a stuntman held her hair underwater and threw it for her when she'd break the surface to create the moment.