More money:- Press [Shift] + 4 to get more money.
Note: This will also make your water dirty.
Mermaid:- Put the mermaid statue in a marine tank.
Hidden Unicorn - This
code from Zoo Tycoon still works with the expansion
pack. Just rename one of your exhibits Xanadu and you
will unlock a unicorn in the animal panel. You must
rename the exhibit. If you try to name a new exhibit
Xanadu, your game will probably crash.
Unlock the Photo Booth - After winning the Shark
World scenario, you'll unlock the photo booth. Check
your structures menu and it will be there.