Starts with a gentle call and response between flute and piano. Nice impact at 0:13 when the lower register of the piano and strings come in and very nice transitions between the various sections.
Really enjoyed the drum break at 1:37. Nice tension in the strings around 3:00, that plus the watery sound effects really sells the sense that there's something lurking in the depths of an ocean.
This song was a journey, great job.