Very Neat
You have all the key parts of an ambient track down and settled, and the wave sound effects are a nice touch. This is good. However, I was disappointed slightly, as you missed a few key moments where some extra "punch" would've made that much more of an impact.
And yes, I will point out which parts. Hurrah for constructive criticism! :D
There is a drum beat that plays just once throughout the entire song. Having it alternate between hitting once, twice, and thrice throughout the song would me an excellent way to vary the beat.
Also, at around 2:08, increasing the bass volume and and adding a few more bass notes was the turn I expected the track to take, and was slightly disappointed when it didn't. Nice and relaxing, speeds up without getting overexcited.
Overall, very nice work, keep it up!