I donated to ALL of them because I couldn't choose! But my favourite was protecting the earth, because there's many endanged animals like the Blue Whale. It's known for it's humongous size. I donated about 30,000 coins so far! I try to convince other penguins to donate, too. One time when I was a Frost Bite, I said "Donate or I'll freeze you!". At that moment I turned back into a penguin. So the "freezing" part wasn't in effect. Anyway, Waddle On!!!