The Great Sea is teeming with hidden treasures, many of which are sunken beneath the waves. To find these, you'll need Treasure Maps. Treasure Maps are often found in dungeons, as rewards for side quests, or purchased from merchants. Once you acquire a Treasure Map, it will appear on your sea chart. The map will show a specific location on the sea where treasure is buried. Sail to that location, and you'll see a sparkling spot on the water. This indicates the presence of sunken treasure. To retrieve it, you'll need the Salvage Arm, which you acquire as part of the main story. Tap the Salvage Arm icon when you're over the sparkling spot. You'll then play a mini-game where you guide the Salvage Arm down to the treasure chest, avoiding obstacles and sea creatures. Successfully retrieving the chest will reward you with Rupees, rare ship parts, or other valuable items. Some of the best ship parts and a significant amount of Rupees can be found this way, so collect every Treasure Map you find and diligently search for sunken treasure.
