Nice submission! I like the game loop of breeding the porpoises to get new types of porpoises. I appreciated being able to speed up and slow down time.
I'm not sure if money meant anything? I seemed to be able to buy/upgrade whenever I wanted. It would be nice to have a money indicator to know how much money the player has available.
I found that sometimes female porpoises became pregnant even if there weren't any male porpoises in the tank with them 😅
I was able to complete all the achievements and breed the final purple porpoise!