In such micelles many molecules ball up with their tails bunched up inside the ball, and their heads on the surface. This way the tails do not touch water and the heads get to touch the water, without the molecules being on the surface. In terms of bubbles this is a handy way of storing soap inside the bubble wall. If there are additional molecules stored in micelles, they replenish the surface so it remains nice and stable. Well, a bubble is a film, but a film is not a bubble.
Bubbles usually start as a film, for instance in a bubble wand.
Once you have blown on this film, it will separate to form a free floating entity called a bubble. Soap films must be bounded on all sides, or their surface tension will pull them into tiny droplets. In the bubble wand the edges of the wand hold onto the film. What keeps a bubble from being pulled into a small droplet is the pressure of the air inside. Soap films always try to minimize their surface area as this minimizes the total energy of the film.