Extended Data Fig. 3: Shape of the bubble interface before jet emission.

The red arrows indicate the jetting occurrence. (a) For the l = 1 shape mode, the single bubble lobe collapses taking a conical shape before ejecting a jet. (b) For the l = 2 shape mode, as the bubble transitions from a prolate to an oblate form, the two bubble lobes at opposite poles follow a conical collapse, releasing two converging jets. Conversely, when the bubble shifts from oblate to prolate, the equatorial region collapses annularly, adopting a parabolic profile. Two diverging jets are shoot up- and downwards from the closure point. (c) For l > 2 shape modes (l = 4 in the present case), the multiple bubble lobes undergo conical collapses, each producing a jet.