Very clean aesthetic, it’s simple but it looks good. It’s very relaxing to play. I reckon it’s much more fun playing on mobile. Instructions are shown nicely with only icons. Other than that, perhaps the gameplay could use some spicing up; right now, there’s nothing unique that makes it stand out. Perhaps you can add some effects, more gesture types, and more interactions with the player. For example, allow the player’s finger to physically interact with some fishes or have different types of aquatic life that can challenge the player’s decision making. All in all, great job 👍