https://science.sciencemag.org/content/371/6529/eaba4658
Using Hydrophones on a bees nest. As they are still piezo microphones.
With hydrophones, patience is really important, Winderen will sometimes wait for 30 minutes before attuning to the water. Winderen uses her hydrophones outside of water as they are basically high powered contract microphones, showing us a demonstration of plugging them into a bee hive. “I sometimes use up to 6 microphones at one time” she claims, each a mono-recording placed mixed in 360, panning certain sounds and captures around the listener in order to sculpt out a depiction of a busier audible picture. The aim with Jana’s hydrophonic recordings is to document the importance of sound through water for aquatic life. In the article above, research into how human made sounds effect aquatic lifeforms shows that freighters and boats make more disruptive noise than earthquakes to nearby settlements of species. This confuses sea life and causes them to move into areas where they can’t thrive and therefor puts species at risk. “We have colonialised the whole planet with our sound” – Jana assesses. Her work is an enlightening look at the macroscopic noise pollution of the sea to the microscopic, the sounds of small fish and insects.
Currents and depths of water influence how sounds will travel in water. Acidity of the water due to CO2 emissions from human activity in the water/pollution of water can effect how sound travels. In this very detailed exploration it shows how many of our activities effect sound and could be having a harmful effect on all of these environments.
https://www.e-flux.com/architecture/oceans/341778/underwater-un-sound/