Fortunately, it was almost as easy to move in the water as it was on a more normal gravity planet, and she quickly splashed back to the surface, and was able to tread water without too much difficulty. The water was<em>cold,</em>though, so she'd likely want to get out of it, fairly quickly.<br/><br/>It was dark, but the caved-in roof gave her enough light to see by, enough to see a small outcropping that was just above the waterline, not too far away.