Title: Mako Mermaids: An H2O Adventure (TV Show, 2016)
Cast: Lucy Fry, Ivy Latimer, Amy Ruffle, Chai Romruen, Isabel Durant, Allie Bertram, Linda Ngo, Gemma Forsyth, Dominic Deutscher, Kerith Atkinson, Rowan Hills, Brooke Nichole Lee
Country: Australia
Rating: TV-G
Duration: 4 Seasons
Genres: Kids' TV, TV Comedies
This "H2O" sequel follows Zac, a boy who accidentally turns into a merman and threatens the existence of three young mermaids who guard Mako Island.