Hopefully the lower levels are not completely under water.

[He could probably swim in there for a time, but that would not be comfortable without breathing and he wouldn't like doing it.

Still, he moves through the space very unlike her. He's basically just strolling, looking quite unconcerned with the possibility of attack, and while he is on alert, he's not really hearing of feeling anything that he recognizes as a threat.]

... Did you just arrive? This must be a little overwhelming.