Siren

Eline Powell

Ryn

Alex Roe

Ben Pownall

Fola Evans-Akingbola

Maddie Bishop

Ian Verdun

Xander McClure

Rena Owen

Helen Hubbell

Ntare Guma Mbaho Mwine

Professor Aldon Decker

Toby Levins

Donnie

Nia Cummins

Teacher

Jaedon Siewert

Narrator (voice)

Devina Briggs

Young Mermaid

Jacqueline Burrows

Girl (At Marine Center)

Thomas Glukler

Young Charles

Claire Margaret Corlett

Sister

Makena Kristjanson

Kid #2

Latonya Williams

Friend

Malcolm Craig

Kid #1

Georgia Bradner

College Girl

Natalie Farrow

Girl #1