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Re: Unidirectional gator breathing in Science

Don Ohmes <d_ohmes@yahoo.com> wrote:

> Speculation -- It may be that birds and other animals w/ an
> "avian-style" respiratory system aren't as vulnerable to
> breathing problems created by high external pressure on the
> body combined w/ a lower pressure of the air in the
> breathing passages, versus animals w/ a "mammalian-style"
> system. 

What did long-necked plesiosaurs do, I wonder?  Did _Elasmosaurus_ have to 
stick its entire neck out of the water just to gulp some air?