Individual air bubbles were released from a vertical, blunt-tipped, 20-gauge hypodermic needle. They rose and collided with an axisymmetric, horizontal water jet submerged in a water-filled tank. Acoustic emissions resulting from bubble–jet interaction were studied. High-speed video analysis was also employed to visually determine bubble behavior (e.g., extent of shear-induced bubble distortion and/or bubble breakup, etc.). Parameters which were varied included the downstream location of the bubble–jet collision, the flow characteristics (Reynolds number, laminar versus turbulent flow, etc.), and the initial bubble size. Results to be discussed will include the sound produced when the bubbles break up and when they do not. The role played by the flow characteristics in determining the acoustical bubble response will also be considered. [Worked supported by ONR, ONT, and DTRC.]