Devil Daniels- Monster Hunter thinks he's hunting a siren- a mythical creature whose song lures sailors to their doom. The Nektons discover it's actually a rare whale with a unique voice, and race to save it from destruction.

The Rover is swallowed by a huge, supposedly extinct prehistoric shark-a megalodon! Will and Fontaine manage to cling to its gills just inside its mouth. Kaiko and Ant frantically try to free them - they can't hold on forever!