This was great. Plays really well and the ability to upgrade your gear is a nice touch. It wasn't super clear that I had to go back to base. I see the comments about the theme, maybe if you were hunting aliens rather than fish it would be a little less like water. I took it to be fish in space, so it didn't jump out to me that I was in water. Music also works well!
In any case, great work to you both.