Hippo Cleanup

Finally I've cleaned up the animation of the hippo and the turtle. With this one, even though there isn't a background I've tried to create the illusion of water with ripples and splashes. I think it works rather well; when you watch it the character's don't look like they're floating in random space.

I added in a bit of stretch in the turtle's face as I cleaned this one up - one of the principles I need to remember to use a lot more.