Blue Whale Song Recorded in Monterey Bay, California

Excerpt from a blue whale song recorded in Monterey Bay, California.

To make the low-frequency sound more audible, playback speed is 10x orginal.

This spectrogram illustrates the “A,” “B,” and “C” calls of blue whales, paired with audio of these same calls played back at ten times their original speed to make them easier to hear. This audio was recorded from MBARI’s hydrophone located in the heart of Monterey Bay National Marine Sanctuary. The day/night pattern of “B calls” can be used as an indicator of whether the whales are feeding or migrating.

Credit: © 2020 MBARI

[blackwalls]

Wow those are low frequencies. That would sound like a rumble.