Hono Mizu was once a port town that thrived financially presumably through fishing and exporting. The entire city sank into what would become the boiling sea due to underwater volcanic activity.
Hono Mizu sank to the bottom of the ocean over forty years ago. Wu asked Ray and Maya to hide the Reversal Blade in the city's library as only masters of fire and water can survive the journey. Kai and Nya then were forced by Krux and Acronix to retrieve the blade in order to save Master Wu from the effects of the time punch. What was left of Hono Mizu was destroyed after Kai triggered a booby-trap.
- Geotonic Rock Monsters
- Mizu means water, flowing or liquid and Hono comes from Honolulu which means calm port or sheltered harbor.