An interesting idea that delivers a mildly engaging atmosphere, but ultimately doesn't offer much behind the reverb. While the piece has a solid structure, it seems like it drags the same riff for three minutes. In fact, I would have loved some variation at around 2:30 and it could have been a good chance to enhance and intensify that breakdown, possibly by adding more background ambiances and sounds.
The mastering is quite well performed, though some sounds may be a little too overpowering - namely the screeching sound reminiscent of whale songs - I find the rest to be rather coherent. The bass is probably the highlight of this song and I really enjoy how you automated it, giving it plenty of life and expression.
//FD