List of episodes
Series one
1. Outcasts (Sam Carroll)
2. Getting Legs (Anthony Morris)
3. Meeting Rita (Max Dann)
4. Lyla Alone (Simon Butters)
5. Blizzard (Sam Carroll)
6. Dolphin Tale (Chris Roache)
7. Zac's Pool Party (Michael Joshua)
8. Zac's Return to Mako (Sam Carroll)
9. The Siren (Simon Butters)
10. Zac Returns to Mako (Chris Roache)
11. I Don't Believe in Mermaids (Max Dann)
12. Close Call (Anthony Morris)
13. Betrayal (Michael Joshua)
14. Battlelines (Sam Carroll)
15. Sirena's Secret (Max Dann)
16. Truce (Chris Roache)
17. Moon Ring 2 (Anthony Morris)
18. The Trident Job (Michael Joshua)
19. Where's the On Button? (Justine Gillmer)
20. Nowhere to Hide (Sam Carroll)
21. Aquata Returns (Anthony Morris)
22. Evie Times Two (Max Dann)
23. Zac's Choice (Chris Roache)
24. Trust (Anthony Morris)
25. Betrayed (Mark Shirrefs)
26. Decision Time (Sam Carroll)
Series two
1. The Seventh Cycle (Sam Carroll)
2. Sticky Situation (Max Dann)
3. Discovery (Anthony Morris)
4. A New Tail (Carine Chai)
5. Bad for Business (Gareth Calverly)
6. Stormy Seas (Chris Roache)
7. Awakening (Evan Clarry)
8. Land School (Anthony Morris)
9. Stowaway (Margaret Wilson)
10. Keeping the Secret (Chris Hawkshaw)
11. Only As Young As You Feel (Max Dann)
12. Supersized (Mark Shirrefs)
13. Reunion (Evan Clarry)
14. A New Man (Sam Carroll)
15. Careful What You Wish For (Michael Joshua)
16. First Date (Max Dann)
17. The Merman Code (Sam Carroll)
18. The Siren (Sam Carroll)
19. Surprise! (Anthony Morris)
20. The Job (Sam Carroll)
21. New Orders (Michael Joshua)
22. The Last Dance (Carine Chai)
23. Stay or Go (Max Dann)
24. The Truth About Evie (Sam Carroll)
25. The Trident Stone (Sam Carroll)
26. The Chosen One (Mark Shirrefs)
