Big Fish & Begonia
大鱼海棠 (original)
From ancient Chinese legends comes an exciting tale of myth and magic. Under the ocean is a mystical race of beings. One of these beings, a 16-year-old girl, travels to the human world in the form of a dolphin and forms a connection with a human boy.
Starring Ji Guanlin, Pan Shulan, Su Shangqing, Timmy Xu, 森 悠也, King Shih-Chieh, Jiu'er, Xang Yuanyuan, Xue Lifang, Zhang Jie
It's a animation and action & adventure movie, and has a rating of 7 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Ireland.