Lyric discussion by waittilyouseemysmile 

In the booklet for Ceremonials, she talks about how when she was a kid and she would go swimming in pools, she used to swim to the bottom of the pool, and she felt almost like she could breathe. She also says that the idea of being overwhelmed by something, not just water, fascinates her. So, that is probably either what the song is about, or at least what inspired the imagery.

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