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!