On Wed, 24 Sep 2003 21:10:29 +1000, Christian Gerzner
<[log in to unmask]> wrote:

>Bjorn wrote:
>> Firstly, nobody is "sinking" the bodies. Sharks don't have a swim
bladder.
>> If they don't swim, they sink. Without fins, they can't swim. So they
sink.
>> Plenty of pictures out thereon the Web of that.
>
>You're right, although there are some, wobbegongs and Port Jacksons as
>two examples, nurse sharks even (the merkin kind) who seem to be able
>to languish on the bottom without moving/finning.

Er...  exactly?

>Regardless, it happened, a distinct burst of bubbles escaped this shark.
>
>Any answers?

Some sharks swallow air to achieve neutralish buoyancy.
e.g. http://www.melbourneaquarium.com.au/education/ffgreynurse.htm

Either that or he'd just eaten someone who had had a curry and twelve pints
of special brew...

Cheers,
Huw
--
http://www.huwporter.com