The track did feel like I was traveling under water in search of something a little beyond my reach. It sounds like the song is the act of finding Atlantis and not actually finding it. Nothing wrong with that! Just my impression from the mood and direction of the composition. Nice stuff!

I enjoy the peacefulness of this track, even if it feels somewhat lonely..  I could definitely see this as background music to a submarine navigation game.   I very much enjoy the submarine ping foley that's added in and the reverse pad riser, stuff like that always sounds so pleasing to the ear for me. Well done.  I don't really have notes about the mix, compositionally it feels like it serves a purpose for a navigation style scene where there is no event, regardless permutations of the main motiff or evolution of the melody would've been great elements to add, but I think it stands well on it's own (more of, "would have been nice" than a "it needs it")!  Good job!