The Gem Chest of Loa (called Rowa's Jewel Box in the European release of Endless Ocean) is a small landmark that is unmarked on the player's map.
Flora, Fauna, and Geography
Sea life within the Box consists of Clown Triggerfish, Green Chromis, and corals adorning the walls. Under zoom-mode glows that are atop the rock surrounding the ceiling entrance, Festive Sea Slugs, Bicolor Angelfish, and Whitespotted Boxfish.
Location and Geography
The Gem Chest is a small alcove at coordinates K-2 in the Coral Forest area. Unmarked on the map, this small cave has a main entrance (facing Coral Forest), but there are also two small holes in the roof that can be swum through (with some difficulty).A single treasure, a fragment of the Ancient Bronze Mirror, rests here.