<p>Fig. 2. This spectrogram is an example of a whale song that started with 1) a loud, low pitch that dropped even lower while getting quieter; 2) a swooping sound that got higher in both pitch and volume; 3) and finally 3 short sounds with the same pitch but decreasing volume.</p>

Fig. 2. This spectrogram is an example of a whale song that started with 1) a loud, low pitch that dropped even lower while getting quieter; 2) a swooping sound that got higher in both pitch and volume; 3) and finally 3 short sounds with the same pitch but decreasing volume.

Image by Emily Sesno