The show transitions from a lighthearted fantasy to a deeper exploration of identity and heritage.
: Initially a standard "surfer dude," Zac discovers he is actually a natural-born merman who was adopted by humans, making his transformation a return to his true self.
: Known as the most powerful mermaid to ever live, her legacy looms large over the series as characters strive to master her complex spells.
The series is famous for its practical effects and world-building.