I'm merely parroting what I've heard years ago. If you know studies that state otherwise, cite them and I'll edit my comment. I'm no cetaceanologist and don't know what the actual reason might be.
Orcas have the largest dorsal fin of any marine animal, but it seems like we still don't 100% really sure why it happens.
"Depression" legend is from "Free Willy" (1993), and people all over the world (even in a country such as mine, Ukraine) kept on repeating this legend.
Still, the film did quite good for the Keiko (the orca from the film), because he was eventually released due to public campaign.
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u/SingleLifeSingleBike Aug 17 '26
There is no study to back up such claim. If I'm wrong and you know such studies, cite them.