I have always interpreted the music of this song like this:
When he is resurfacing for air he hears the loud noise of the diving crew and the wind etc of our world (loud guitar parts).
When he dives back down he enters the serene abyss of the ocean. Sound doesn't travel well in water and the quiet parts of the song are when the music most resembles the magical underwater world and you can even imagine the air bubbles floating up. Also the different parts seem to be timed consistently like a diver would do when getting air.
No matter what your interpretation, this song is such a great adventure for the ears and mind!
I have always interpreted the music of this song like this:
When he is resurfacing for air he hears the loud noise of the diving crew and the wind etc of our world (loud guitar parts).
When he dives back down he enters the serene abyss of the ocean. Sound doesn't travel well in water and the quiet parts of the song are when the music most resembles the magical underwater world and you can even imagine the air bubbles floating up. Also the different parts seem to be timed consistently like a diver would do when getting air.
No matter what your interpretation, this song is such a great adventure for the ears and mind!