This family friendly Japanese animation plays a variation on Hans Christian Andersen’s The Little Mermaid.

A sulky teenage boy in a small seaside town befriends a cute mermaid called Lu after she joins in with the music he is making with a couple of classmates. Her singing proves enchanting, but the town has a long-held suspicion of merfolk…

Masaaki Yuasa’s film certainly has its quirky charms, but it is overlong and the crudely colourful animation lacks the magic touch of Studio Ghibli classics.