Rain's idea of encouragement was quite dark, to say the least… everyone was already quite tense for moving underwater at night, and when they returned to the surface, they were surrounded in all directions by darkness as well.
Fortunately, the sky was free from clouds and so they could see a sea of stars and the moon illuminating things quite a bit, but it wasn't enough to make them feel safe. Using all the heat that they could control in a large area, the heat sorcerers created several fireballs and made them slowly rotate around them. That illuminated things a lot, but then they realized that they would easily find it in that situation, and underwater was still pitch dark.
