The dvds aren't out yet but I found the links hope this helps you.
1.The Awakening
link
2. Jungle Hunt
link
3.Keep your Enemies close
link
4.Valentines Day
link
5.Big Ideas
link
6.Secrets and Lies
link
7.Happy Families
link
8.Kidnapped
link
9. The Sorcerer's Apprentice
link
10. Revealed
link
11.Just a Girl at heart
link
12. Crime and Punishment
link
13.To Have and To Hold back
link
14. Mermaid Magic
link
15. Power Play
link
16. The Dark side
link
17. A Magnetic Attraction
link
18.Into the Light
link
19. Breakaway
link
20.Queen for a Day
link
21. The Jewel Thief
link
22.Mako Masters
link
23. Beach party
link
24. Too Close for Comfort
link
25. A Date with Destiny
link
26. Graduation
link
H2O behind the scenes series 3
link
Here are the episodes and bonus behind the scenes of the new series. click on free user wait for a couple of minutes and it will say click here to download and then you save it!
The other one just type in the code and in a minute the download will appear enjoy!