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Re: Great in the air, not so good underwater
On Friday, December 8, 2006, at 12:44 PM, jrc wrote:
As I said, they're not good at it -- but flapping while flying (or
ballistic leaping with relatively large 'wings') is clearly compatible
with an evolutionary path towards improved flight performance. The
eventually problem with that path is of course that they are not
presently equipped to remain aerobicly powered during extended flight.
Wanna bet that they won't solve it in a few million years (if they
Oh, I agree that it is compatible with an evolutionary path towards
improved flight; I'm merely saying that they probably aren't actually
powered flyers, and hatchetfish might not even be gliders. The
enlarged pectoral fins might be utilized for some other function.