The following account was recorded in the agent's log during your transmission: Sunlight streams through a lattice of fossilized coral in a massive underwater cave, casting an intricate pattern on the rough stone beneath. Umm, the air pressure's kinda off, and I can smell the sweetness of blooming sea anemones mixed with saltwater. On the wall, a section of ancient, corroded pipe has "Echo" etched into it - seeing it is like this sudden rush of recognition, and everything clicks into place, I finally know who I am. A steady trickle of water flows upward, defying gravity, from the pipe into a small, delicate glass vial suspended in mid-water.