Photographer Richard Heeks, from Exeter, used a fast shutter speed of 1/500th of a second and a wind-free day while his wife Sarah provided the all-important finger.
A bubble is made up of three layers - one thin layer of water sandwiched between two layers of soap molecules.
As Sarah's finger breaks the surface tension, the perfect sphere is replaced by a round mass of soapy droplets which dissolve into the air. No matter what the shape the bubble is initially, it will always try to become a sphere because it as the smallest surface area and requires the least amount of energy to achieve.
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