itch.io

Theme: Yep. Definitely very water based. I have actually wondered what it would feel like to have an amphibious lifestyle. Like, I've always enjoyed swimming, maybe it's because as a child we could go to the public pool. And I swam in high school some. I was only on the swim team for a year, but it was quite a transforming experience. Anyway, good use of theme.
Fun: It's fun overall, but, it becomes very slow. It's only because I was not in a hurry that I didn't mind the simple meditative aspect. I mean, the main bottleneck, the thing that took so long, was growing trees one at a time, and hoping you get the wood type you need. I had lots of red wood and never enough white. It's a simple fix IMO, just have there be more tree propogation. Maybe let me build 3 seed spawners or something :)
Mechanics: It all works well and without any bugs, so good mechanics. But there is room for improvement, the game is a bit dull still.
Music and Sounds: Sounds great, good job