Brilliant!  Just what I wanted, many thanks  :-)

David Shaw

On 18/04/14 01:33, xxxxxx@ozemail.com.au wrote:
>
>
> 	David Shaw wrote:
>
> 	> but what would be the physiological effects, if any,
>> of the opposite, moving to a thicker atmosphere than
>> the one you're adapted to?
>
> 	Think about the problems divers face at depth.