|BIONICLE 6: The Underwater City|
|Series||BIONICLE Graphic Novels|
|Number in series||6|
|Previous book||BIONICLE 5: The Battle of Voya Nui|
|Next book||BIONICLE 7: Realm of Fear|
BIONICLE 6: The Underwater City was a graphic novel released in August 2009, featuring the six 2007 comics detailing the Toa Mahri's struggles with the Barraki over the Kanohi Ignika. The comics were illustrated by Stuart Sayger and written by Greg Farshtey.
- Comic 6: Web Comic
- Comic 7: Mask of Life, Mask of Doom
- Comic 8: Sea of Darkness
- Comic 9: Battle in the Deep!
- Comic 10: The Death of Mata Nui
- Comic 11: Death of a Hero
- Hydraxon's Tale - Exclusive short story
| BIONICLE: Volume 1|
BIONICLE: The Saga of Takanuva!
Papercutz Series: Rise of the Toa Nuva • Challenge of the Rahkshi • City of Legends • Trial by Fire • The Battle of Voya Nui • The Underwater City • Realm of Fear • Legends of Bara Magna • The Fall of Atero • Power of the Great Beings (Unreleased) • Journey's End (Unreleased)