W and S are your up and down keys. A and D turn you. Space moves you. The music is quiet so it doesn't hurt headphone users if their volume is too high. If you don't hear the music, turn up your volume until you do.
Fair warning: some of the critters in this game are scary. If you want to see the names of the fauna and flora, look at the names of costumes in the world display sprite. The sprite art is mine. (Not an AI, for once. Don't get used to it, though. This won't happen often.) However, the designs for the animals and plants are not mine, and belong to Unknown Worlds Entertainment. More details about the credits as well as a hidden message are visible if you swim out far enough, past the mushroom forest biome.