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47Marine Research of the National Academy of Marine ResearchDOI: 10.29677/MR.202406_4(1).0004A Review of Passive Acoustics Monitoring Results in the CoastalWaters off Western Taiwan for the Past DecadeFigure 9. Spectrogram of fish chorus recorded by Mok's team in coastal waters of Taiwan in 2009. (A) Blackspotted croaker; (B) Japanese croaker and (C) big-snout croaker sounds (Mok et al., 2009)Figure 10. Spectrum of two different fish chorus found in the Miaoli Demonstration Wind Farm. (a) Spectrogram of Type 1 and Type 2; (b) waveform of Types 1; (c) waveform of Types 2; (d) zooming the spectrogram of Type 1; (e) zooming the spectrogram of Type 2. (Siddagangaiah et al., 2022b)