Cocijo, known as the Reinforced-Shelled Turtle, is one of the most challenging new bosses in Genshin Impact's Natlan region. Introduced as a Local Legend in the most recent update, the enemy appears in the Ameyalco Waters area and promises to test players' skills.
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Despite its robust appearance and devastating attacks, defeating it is possible with strategy and intelligent use of the elements. Below, check out a detailed guide to efficiently locate, summon, and defeat Cocijo.

How to find Cocijo in the Natlan region
Cocijo is located in the area known as Toyac Springs, in the northeastern part of Ameyalco Waters. To easily reach the battlefield, it's best to use the teleport point at the Statue of the Seven in the area. Additionally, the arena is open and circular, with enough space to move around during combat.
Before starting the fight, it's necessary to break the electric crystals scattered around the area. These crystals activate Cocijo's presence, but the boss won't be immediately aggressive. It's possible to approach cautiously and prepare before initiating the confrontation.
Best characters to face Cocijo
Using characters with Pyro affinity is essential to destroy the electric crystals that activate Cocijo. During combat, characters with good mobility also stand out, as the boss uses long-range spinning attacks.
Among the best team compositions, the following stand out:
- Bennett: for his offensive support and healing.
- Mavuika and Citlali: due to their high agility and dodging ability.
- Xilonen: due to its synergy with elemental reactions.

Combat strategies: what to expect during a fight
As soon as the fight begins, Cocijo starts with a frontal charge. It's important to dodge immediately to avoid massive damage. Next, the boss performs a spinning attack that covers a good portion of the arena. Although powerful, this move is predictable and easy to avoid with lateral movement.
One of the key elements of combat is the charge bar located below Cocijo's HP. As the player hits the enemy, this bar fills up. When it reaches its maximum, the boss activates an electric shield that makes him more aggressive and resistant.
During this phase, Cocijo launches area-of-effect projectiles and summons lightning bolts at random points on the field. The best tactic at this point is to avoid direct confrontations, dodge attacks, and use ranged elemental abilities to weaken the shield.
When to attack and how to finish the fight
After the shield breaks, Cocijo enters a vulnerable state. This is the ideal time to use elemental bursts and abilities with greater attack power. Concentrate all offensive resources during this short interval to reduce the boss's health as much as possible.
Despite its intimidating appearance, Cocijo's movements are slow and predictable, which favors attentive players. Thus, by mastering the rhythm of combat and knowing when to retreat or advance, the battle becomes more manageable.

Alternative version of Cocijo in the Spiral Abyss
In addition to the open field in Natlan, Cocijo also appears in a weaker version on the 11th floor of the Spiral Abyss in version 5.7. In this version, he maintains the same attack patterns, but with less resistance and offensive power. The ideal team for this challenge includes fast characters with strong sustained damage output.
Defeating Cocijo requires preparation, pattern reading, and a well-coordinated team. With the right tips and knowledge of the boss's behavior, it's possible to face him safely and earn valuable rewards. The Reinforced-Shell Turtle is yet another example of how Genshin Impact elevates the level of encounters with its Local Legends, making each battle a unique experience in the world of Teyvat.

