So today, after many many many dreams, I finally received the Golden Dream Badge!:
I now have 4 Gold Badges left. The hard part is that I have no good way to keep track of how many I have to go which makes it a lot harder to be motivated. For reference, the ones I have left are the catching lots of bugs, fish, and diving creatures (5K for the first two, 2K for the last) plus the earning 5,000 medals one.