  Using high-speed video, we have studied air bubbles detaching from an
underwater nozzle. As a bubble distorts, it forms a thin neck which develops a
singular shape as it pinches off. As in other singularities, the minimum neck
radius scales with the time until breakup. However, because the air-water
interfacial tension does not drive breakup, even small initial cylindrical
asymmetries are preserved throughout the collapse. This novel, non-universal
singularity retains a memory of the nozzle shape, size and tilt angle. In the
last stages, the air appears to tear instead of pinch.
