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serendrewpity t1_j4t8i34 wrote

Beautiful creatures and sad the dolphin to the porpoise died off

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ContentSherbert934 t1_j4ton4t wrote

If anyone was wondering, this creature naturally has no dorsal fin rather than the fin being cut off on porpoise.

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Tricanum t1_j4vsmbk wrote

Freaky. I just finished watching an episode of Extraordinary Attorney Woo last night titled 'Yangtze River Dolphin'. No doubt Attorney Woo would be very pleased to hear this news.

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B_lintu t1_j4w4qh2 wrote

What is the porpoise of having no fins or have they not evolved having them yet?

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screamlikeapanther t1_j4wnocm wrote

Did the porpoise figure out how to thrive on human waste? Is this the purpose of the porpoise?

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enishi1357 t1_j4wsxkr wrote

all the fin ones got hunted to extinction

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DaRedGuy OP t1_j4xr156 wrote

Their dorsal fin was modified into a dorsal ridge that is covered in varying rows of tubercles. These tubercles are used as a sensory organ, as well as to move through the water.

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