Download the full OST by Alias Conrad Coldwood at "Unproductive Fun Time" (I can't paste links yet, sorry). This was uploaded because DontBleedOnTheSuits's channel was taken down - this video will be deleted if the original composer wishes.
Ah, my favorite sloshing sounds. It's funny how most people would chalk the white sea down to being part of the visual style, only to find out that yep, that's all liquid plastic. Really calming, though. (Why do so many people think of piss when they hear this???)
