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Hydroacoustics
![](https://assets.agrovoc.fao.org/public/styles/full/public/2022-05/%C2%A9%20FAOMassimo%20Berruti.jpg?itok=HffK3BHg)
FAO/Massimo Berruti
Hydroacoustic techniques are currently the most efficient tool to study the aquatic environments remotely, giving a continuous high spatial resolution sampling. Specifically, it is used in investigation of fish populations in marine and freshwater environments.