How to Complete Sidon of the Zora in TOTK

The Legend of Zelda Tears of the Kingdom introduces players to a massive world full of dynamic quests and regional conflicts. One of the most prominent storylines takes Link to Lanayru, where the proud prince of the aquatic race needs immediate assistance. Overcoming the mysterious toxic sludge suffocating the Zora people requires solving ancient environmental puzzles and proving your worth alongside a fan-favorite companion.
Reaching Zora Domain and Mipha Court
Your grand adventure begins by navigating through the sludge-infested paths of the Lanayru region to locate the center of the Zora civilization. Upon arriving, you learn that Prince Sidon is stationed higher up at Mipha Court trying to purify the local waters. Traveling up the mountain allows you to finally rendezvous with the prince and initiate the main objectives of this narrative arc.
Before diving into the core ancient mysteries, you will need to meet with Sidon's fiancé, Yona, back down at the main plaza. She provides a vital upgrade that allows Link to swim up rushing waterfalls effortlessly, which is completely mandatory for later sky exploration. Securing this unique armor piece acts as the functional foundation for everything that follows in the regional quest line.
Solving the Riddle of the Land of the Sky Fish
Progressing further requires deciphering a cryptic riddle delivered by the Zora king regarding a hidden celestial location. You must look for a uniquely shaped floating landmass in the sky that resembles a fish floating amid the clouds. Utilizing your newly acquired armor allows you to launch directly into the sky islands from nearby waterfalls to reach this destination.
Once you are standing on the floating island, align your perspective to locate a specific formation of floating stones that creates the shape of a droplet. Fusing a king scale to a standard arrow allows you to shoot through the center of this floating droplet accurately. This successful action triggers a glowing beam of light down below, opening the pathway to the long-lost ruins hidden under the lake.
Navigating the Ancient Zora Waterworks
The next major phase of your journey takes you beneath the surface of the water into a massive underground drainage facility. This subterranean zone requires Link to clear out clogged pipes and navigate fluctuating water levels to progress deeper. Using basic explosive items or localized heavy weapons will help clear out the dense sludge blocking the critical valves.
Activating all the underground mechanisms opens up a massive whirlpool that serves as the direct gateway into the heavens. Sidon will join you directly for this sequence, providing his unique water shield ability to protect Link from incoming damage. Together, you will ride the massive waterspouts upward into the sky to enter the legendary Water Temple dungeon.
Conquering the Water Temple Challenges
The ultimate test of the Lanayru region involves activating four distinct water terminals spread across a grand floating palace. Link must utilize Sidon's localized water manipulation power to clear out corrupted mechanisms and power up the main temple infrastructure. Balancing standard platforming with zero-gravity jumping physics makes exploring this dungeon an incredibly memorable experience.
Completing the terminals unleashes the main boss of the temple, a mischievous creature that swims rapidly through pools of toxic sludge. Using Sidon's water waves to clean the arena allows you to corner the monster and deal massive melee damage quickly. Defeating this threat restores absolute peace to the Lanayru region and permanently unlocks Sidon as a summonable companion for the rest of your journey.