The Swamp Palace in Lorule is the dark world equivalent of the House of Gales, but instead of wind, it features water level manipulation. You'll need the Hookshot and the Zora's Flippers to navigate this dungeon effectively. The dungeon's puzzles revolve around raising and lowering water levels to access new areas and solve switch-based challenges. Prepare for a lot of swimming and precise platforming.
The Swamp Palace is located in the southern part of Lorule, in the equivalent of Lake Hylia. The entrance is often submerged, requiring you to find a way to lower the water or swim to it. Inside, you'll encounter enemies that thrive in aquatic environments. The Hookshot is crucial for crossing large water-filled gaps and activating distant switches. Pay close attention to the water flow and how it affects movable blocks and platforms. There are often multiple paths to take, but only one will lead to the boss, so explore thoroughly and don't be afraid to experiment with the water levels.