Super Mario Sunshine Easter eggs

Automatic yoshi!
If you get on yoshi then turn off you're controller in a place where yoshi is not close enough to fruit to eat it with his tongue, wait until his belly is empty and you will see yoshi automaticly go to get fruit with you still on him! If you are far enough away from fruit he will turn green and start to dissolve the way he does in water. If he doesn't get to fruit in time he will die.