The illustration is B.S. lacking.
The illustration are angled relative to each other but both depict zero angle of attack. The presuption is that the vortexes generate at an angle of attack. This is not compelling.
It also ignores the hair follicle turbcles on the humpback's jaw. Those are even more mysterious. Humpbacks are powerful sound emitters. Poerhaps there is an acoustic function.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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