First of all, your team absolutely nailed the atmosphere. The music sets such a relaxing mood that I can't help but want to keep my kelp farm safe, and the little fish swimming around are very charming. I hadn't heard of kelp farming before this game and I am definitely now interested in learning more about it.
I had some trouble planting the kelp, so I wonder if a tutorial would be useful inside the game if you decided to continue. Great work.