Secret Mermaid
1 Enchanted Shell (2009)
2 Seaside Adventure (2009)
3 Underwater Magic (2009)
4 Reef Rescue (2009)
5 Deep Trouble (2009)
6 Return of the Dark Queen (2009)
Dolphin Danger (2010)
Penguin Peril (2010)
Seahorse SOS (2010)
7 The Dark Queen's Revenge (2010)
Turtle Trouble (2010)
Whale Rescue (2010)
2 Seaside Adventure (2009)
3 Underwater Magic (2009)
4 Reef Rescue (2009)
5 Deep Trouble (2009)
6 Return of the Dark Queen (2009)
Dolphin Danger (2010)
Penguin Peril (2010)
Seahorse SOS (2010)
7 The Dark Queen's Revenge (2010)
Turtle Trouble (2010)
Whale Rescue (2010)
Omnibus editions
Penguin Peril / Turtle Trouble (2017)
Seahorse SOS / Dolphin Danger (2017)
Whale Rescue / Dark Queen's Revenge (2017)
Seahorse SOS / Dolphin Danger (2017)
Whale Rescue / Dark Queen's Revenge (2017)