On 09/08/10 14:22, William "Chops" Westfield wrote:
> On Aug 8, 2010, at 8:08 PM, Jake Anderson wrote:
>
>   =20
>> They aren't that hard to blow yourself
>>     =20
> Yes; I've seen scuba divers blow air rings.  Usually straight upward,
> and without any of the fine control that the dolphins show.
>
> A really interesting question is whether the dolphins got to observe a
> human blowing air rings before they tried it themselves...
>
> BillW
>
>   =20
I'd wager it was the other way around. Well it was in my case anyway ;->
--=20
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