This is first seen at the end of the main plot in Endless Ocean 2. After losing GG for soome then unexplained reason, the diver swims into this room and plays The Song of Dragons on the dragon flute and it responds back.
The currents outside then pick up and sweep Oceane away and the player swims after her.
- This isn't the only location that's named after Osiris. Osiris's Courtyard in the Zahhab Region Depths carries the god's name as well.
- Several purple tang, Polka-dot Ribbonfish and a couple atlantic tarpon are seen in here as well.