Akaku Nuva

"[Kopaka] stepped away from Pohatu and activate the power of his mask, enabling him to peer through tons of stones into the network of caves within Mount Ihu. It was the work of moments to find a cavern in which there was a lone Kanohi Hau Nuva, the Mask of Shielding."

- Narration, BIONICLE Chronicles 4: Tales of the Masks

The Akaku Nuva was the Kanohi Nuva Mask of X-Ray Vision, created when an Akaku was dipped in Energized Protodermis. It gave the user and those nearby the power to see through objects and illusions. They were fitted with telescopic lens to give the user(s) enhanced viewing. Only Toa Nuva could use this mask. For some reason, this mask's power could not pierce the mist in Karda Nui.

Known Wearers

 * Kopaka Nuva - Main mask
 * Pohatu Nuva - Not worn regularly
 * Onua Nuva - Not worn regularly
 * Lewa Nuva - Not worn regularly
 * Gali Nuva - Not worn regularly
 * Tahu Nuva - Formerly; destroyed during the sinking of Ta-Koro.