This is Life Vest! Please don't copy this it took a long time to make. I know it's a little shaky but i used a mouse. Also this was released near my b-day (September 2nd).
How i did this: Step One: i made a drawing on paper. Step Two: i took a picture of the drawing on scratch. Step Three: I filled in the drawing. Step Four: i made the background. Step Five: I made the Bubbles. Credit: my brain and @Dandiilion