As the Roberts family heads to Costa Rica to investigate a mermaid legend, Barbie takes on a summer job at a water park run by a devious boss. Greg Chun, Cassidy Naber, Lisa Fuson, Ritesh Rajan, Stephanie Sheh, Cassandra Morris, Desirae Whitfield, Eamon Brennan, Emma Galvin, Cristina Milizia, America Young, Kirsten Day, Kirsten Day, America Young, Cassidy Naber, Cassandra Morris, Stephanie Sheh, Emma Galvin, Cristina Milizia, Desirae Whitfield, Greg Chun, Lisa Fuson, Eamon Brennan, Ritesh Rajan Added on Netflix 2020-04-17.