The Underwater Patrol Mek (Ousia) is a special underwater enemy you’ll need to locate during certain quests and exploration challenges in Genshin Impact. However, the game doesn’t clearly explain where to find it, making this objective confusing for many players. In this guide, we’ll show you exactly how to get the Underwater Patrol Mek (Ousia), and where to find it.
Where to Find Underwater Patrol Mek (Ousia)
To find an Underwater Patrol Mek (Ousia), head to the underwater regions of Fontaine and dive beneath the surface. These enemies commonly patrol underwater ruins, tunnels, and shipwrecks throughout the region.
As you explore, keep an eye out for an Underwater Patrol Mek with an Ousia alignment. Once you find one, defeat it or interact with it as required by your current quest or objective.
How to Defeat Underwater Patrol Mek (Ousia)
Underwater Patrol Meks are powered by one of two Arkhe alignments: Pneuma or Ousia. Their attack patterns vary depending on which Arkhe energy they possess.
The easiest way to disable an Ousia-aligned Underwater Patrol Mek is to hit it with the opposite Arkhe energy, Pneuma. Doing so removes its Arkhe alignment, causing the Mek to enter an overloaded state. While overloaded, it becomes unable to attack for an extended period, giving you plenty of time to defeat it or complete your objective safely.