This is a clip of an audio recording of a quarry dive. The hydrophone is sitting approximately 5 metres under the water against the side of the rocks. I could not get the microphone any further under as I was seven metres or so above on a mini-cliff which meant throwing the microphone in from height. Boddam Quarry is a fresh-water training site for dive clubs, so at this point there was six divers in total in the water.
This is a recording of the last tide of the day, coming in under Achiltibuie Pier on a summer evening in North West Scotland on 6th August 2008. The recording is very quiet as the weather conditions were sunny and calm; however there is a slight electrical noise that I was not aware of at the time of the recording, which is common-made electro-magnetic interference for which the hydrophone needs to be balanced.
