Electrical Storm Lyrics

Lyric discussion by OliverAstro 

Cover art for Electrical Storm lyrics by U2

Stupid question, but when he talks about swimming in the sound, you you think he's meaning a body of water, or metaphorically swimming in audible sound....of the rain?? I always hated this part in high school literature assignements, trying to figure out what the writer was trying to convey or figuring out the meaning behind the words. I sucked at it.