Fig. 5
From: Marine reef soundscape monitoring with fiber-optic distributed acoustic sensing
Representative spectrograms of fish sounds captured by fiber-optic DAS. (a–d) Spectrograms labeled as Ex. 3-Ex. 6, showing various fish vocalizations and behaviors. (e) Spatiotemporal signal of the drumming acoustic event from Ex. 3 along the fiber section near the shore. (f) Corresponding FFT of the drumming acoustic event. Note: This figure focuses on low-frequency fish vocalizations (<1 kHz). The high-frequency snapping shrimp sounds are presented in Figs. 2, 3 and 4.
