tranquil, yet pulsating
I know that's an ambivalent tag line that I've given the review, but bear with me. The ambience that you've given the piece really does have a certain tranquillity about it, where you feel like relaxing and seeing the whole piece has this about it sets it up well.
The pulsating part comes from the slow, steady beat that you imparted to the piece in the early going and stayed along with toward the end of the piece.
As we start, it's only seagull calls short of being a beach scene. The beat hits you and in spite of that, the electronica that you use just seems to relax everything about it, allowing the beat to trace its own path through the music.
Losing the bass in the middle of the piece, you end up with more calm and serenity than the later middle section gives you when the beat returns. I could see this being the sort of tune that you use to keep you calm in a high stress job situation.
Moving toward the end, the part where you seemed to fade the bass out was unexpected and it almost calms the track down a little, as if it needed it a little, just before putting the track to bed. Should you consider ending with the waves as they were at the start? This would help to loop the piece.
I think you could possibly stand to reduce the length of the piece ever so slightly and if you did, it would have to be done very carefully, just to prevent anything of real beauty and substance from being lost. Finally, I'd say the genre that you were after is Ambience, as this is something that could be used by so many people for various projects.
[Review Request Club]