The recording does not do justice to the actual sound. Seriously some of those sounds vibrated my chest. I didn’t realize whales had such a wide frequency of sound. Some were mid to hi frequency and some were very low.
As they swam into the depths, straining their eyes to find the sound’s source in the cloudiness of the water, the vocalizations became louder, and then something huge began to emerge. Here’s a glimpse:
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