water>submarine.aif

water: submarine : i staked different natural water noises(9 to be exact) at different pitch with various effects to obtain the envelope of this sound fx (one of this sound you can heard make me think about the water against the metal of the submarine),after, i took an fx witch look like a sonar from a plug-in synth witch i passed in a delay to give it deepness. then i added an natural airplane engine noise that i slowed down and filtered to delete the wind noise for feigned the submarine engine.
it was all mixed and processed in ableton live with a little finalisation with peak and a limiter.