A crazy scientist is in search of a sea monster, in this family comedy featuring mermaids, pirate treasure, sea monsters, and more. In a shared universe with Jim Wynorski's 2017 family film Nessie & Me, due to several actors reprising their roles.
| Actor | Role |
|---|---|
| VVicky RichmondStella | Stella |
 James Wolford HardinOld Miner | Old Miner |
 Dennis CrosswhiteMason | Mason |
| WWilliam CothronSteamer | Steamer |
| JJason SmitherAlphonse | Alphonse |
| DDavid DeSpainNot listed | Not listed |
 Ervin RossScientist Marve | Scientist Marve |
| JJim O'RearBoris | Boris |
 Erin NeuferArial | Arial |
 Stacey DixonKitty | Kitty |
| GGerard PauwelsMaxwell Gordon | Maxwell Gordon |
| KKayla GillTamara | Tamara |
| SShay DickerhoffIzzy | Izzy |
| PPaul WallaceLarry | Larry |