20 Nov '11, 10am

Why does this dolphin have its fin on backwards?

Why does this dolphin have its fin on backwards?

It's possible-- but it turns out that the nautical efficiency of the dolphin's backwards fin is only half the mystery. The really peculiar thing about these dolphins is that only adult males showcase the odd trait. Females and juveniles actually have perfectly normal-shaped fins. This leaves open an important question: Even if the backwards fin is proven to provide benefits for the dolphin, why would the trait only be seen among adult males?

Full article: http://www.mnn.com/earth-matters/animals/stories/why-does...

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