The instrumentation is well selected, and the themes are sound. The style is cohesive, as well.
One thing to maybe take a look at is that the first couple of tracks are populated with instruments that are suitable for nuance in softer dynamics, but the overpowering diegetic sounds of the rolling wave splashes make it seem like they're all getting their dynamics cranked to make up for it. I'd recommend dialing down the wave sound effects overall. If you are worried they would be too quiet or unnoticeable under different circumstances, you can introduce them before the instruments begin playing, and taper off their volume as instruments make their entrances; that way, the listener is more likely to remain aware of them as something felt more than heard.
Perhaps the current volume was your intention, but either way, it's something worth experimenting with.
I enjoyed this!