Animated Sprite - bubble pop

I need the main object, a bubble (top-down view) for an Android app. Maybe it can have smaller bubbles or a foamy look around the bottom of it. The bubble will pop when pressed. 100 bubbles will be on the screen so it needs to be easily resizable. Transparent of course. Cartoon style or realistic is fine, as long as it looks clean. Should be pretty simple, I think.