Here's an animated loader I created for learning fluid animation.Tools I used are After Effects & Illustrator.I created the fluid moving animation with Bezier Keyframing and Offset Effects of After Effects.
You can take a closer look with this Animated GIF.If you want to know how I created fluid Animation,this article would be suitable for you.
http://ideastocreations.blogspot.jp/2012/03/ae-create-animated-waves.html
