Mask of Water Breathing; big help when there's no water anywhere around.

Gali, BIONICLE Legends 10: Swamp of Secrets

Mask of Water Breathing
Power(s)Let user breathe underwater
KanokaShrink; Regeneration; Remove Poison
Notable Wearer(s)The Toa Mata (formerly)

The Kanohi Kaukau was the Mask of Water Breathing, sometimes called the Mask of Water. It gave its user the power to breathe underwater, albeit only to a certain depth and for a limited amount of time.

Kaukau were carved out of a mixture of Shrink, Regeneration and Remove Poison Kanoka on Metru Nui.

Example Usage

Great: Gali, Kopaka, Pohatu, and Onua used their Kanohi Kaukau to retrieve a Miru hidden underwater in BIONICLE Chronicles 1: Tale of the Toa.

Known Wearers


    • Tahu - Former secondary mask
    • Gali - Former primary mask
    • Lewa - Former secondary mask
    • Pohatu - Former secondary mask
    • Onua - Former secondary mask
    • Kopaka - Former secondary mask
  • One of the Toa of Ice on the Toa Mangai - Formerly; now deceased.


Set information

The Kaukau was first released in 2001 in transparent blue with Gali's set, and was also available in transparent red, green, black, white and (curiously) orange as one of the two randomly-selected Kanohi in the supplementary Kanohi mask pack.

In 2002, the Kaukau was also released in a similar Mask Pack, this time in gold or silver and also coming with three Krana in addition to the other randomly-selected Kanohi.

The transparent blue Kaukau later returned in 2003, as part of the Hahli Matoran set.

This mask also exists in yellow and light blue, but they are extremely rare.


  • Before the Bohrok destroyed it, Naho Falls had a massive Kaukau statue carved into it.
  • This mask is not related to Turaga Matau's Kau Kau Staff.
  • In Maori, "Kaukau" means "to swim"
Legendary Kanohi
VahiIgnikaMask of Creation
Great/Noble Kanohi
Toa Mata HauKaukauMiruKakamaPakariAkaku (AkiRua)
Toa Metru HunaRauMahikiKomauRuruMatatu
Toa Inika CalixEldaSuletuSanokKadinIden
Toa Mahri ArthronFaxonZatthGaraiVolitakTryna
Toa Hagah PehkuiMask of ClairvoyanceKualsiMask of EmulationMask of GrowthMask of Rahi Control
Karda Nui Makuta JutlinAvsaFelnasMohtrekShelekCrast
Other Kanohi Infected KanohiGolden KanohiCopper Mask of VictoryMask of Elemental Energy
AvohkiiKraahkanMask of Light and ShadowKirilOlisiRodeOlmak
Mask of IntangibilityMask of PossibilitiesMask of Psychometry
Mask of MutationMask of CharismaMask of HealingMask of Scavenging
Mask of AdaptationMask of AgingMask of Biomechanics
Mask of ConjuringMask of FusionMask of Incomprehension
Mask of ReboundingMask of Sensory AptitudeMask of Undeath
Kanohi Nuva
Toa Nuva Hau NuvaKaukau NuvaMiru NuvaKakama NuvaPakari NuvaAkaku Nuva (Aki NuvaRua Nuva)
KanohiKranaKanohi NuvaKrana-KalKraataKanokaRhotukaZamor SpheresSquidsGolden Armor
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