Many bubbles made with air-filled bottleunder water of a sinkthis one is not continuous, sounds more bottlingrecorded with sony md recorder and stereo microphone.
Just some bubbles blowing into water with a rubber tube. Could be used for laboratory foli or boiling water. Some echo, but not too bad if you keep the volume low.
Many bubbles made with air-filled bottleunder water of a sinkthis one has smaller and continuous bubblesrecorded with sony md recorder and stereo microphone.