Guest Stars Dominic Deutscher as Cam Rowan Hills as David Kerith Atkinson as Rita Santos Brooke Nichole Lee as Carly Nick Wright as Joe Natalie O'Donnell as Veridia Emily Robinson as Amaris Savannah McDaniel as Naia Summer Robertson as Ava Milly Walton as Jewel Jessica Stafford as Mermaid Council Member #1 Jacqueline Tan as Mermaid Council Member #2 Shinji Ikefuji as Market Man