Sonar may cause bends in dolphins, whales

Sonar may cause bends in dolphins, whales

http://www.alertnet.org/thenews/newsdesk/N2W131369.htm

Oh no! Please tell me it don't ruin the meat?

"Dive News" <always@on.topic.always> wrote in message
news:3f849d3b$0$500$45beb828@newscene.com...
>
> Sonar may cause bends in dolphins, whales
>
> http://www.alertnet.org/thenews/newsdesk/N2W131369.htm

Dive News wrote:

>
> Sonar may cause bends in dolphins, whales
>
> http://www.alertnet.org/thenews/newsdesk/N2W131369.htm

It's thought to cause bend like symptoms, as seen in SCUBA divers.
It can't be DCS because whales and dolphins don't breathe compressed gas.
Should test it, the sonar, on free divers first!
FU set, not xposted.
--
del 8-)

more at http://news.bbc.co.uk/1/hi/sci/tech/3173942.stm


"Dive News" <always@on.topic.always> wrote in message
news:3f849d3b$0$500$45beb828@newscene.com...
>
> Sonar may cause bends in dolphins, whales
>
> http://www.alertnet.org/thenews/newsdesk/N2W131369.htm

Only the gristly parts.

Frank A. left this mess on Wed, 8 Oct 2003 21:21:29 -0500 for The Way to clean
up:
>
>Oh no! Please tell me it don't ruin the meat?
>
>"Dive News" <always@on.topic.always> wrote in message
>news:3f849d3b$0$500$45beb828@newscene.com...
>>
>> Sonar may cause bends in dolphins, whales
>>
>> http://www.alertnet.org/thenews/newsdesk/N2W131369.htm
>
>

Tao te Carl

"It takes a village to have an idiot." - Carl (c) 2003

del <$/$new$/$@foodel.org.uk> wrote:

> It can't be DCS because whales and dolphins don't breathe compressed gas.

You do not need to breathe compressed gas to get DCS. You just need to
have enough time at depth to absorbe the gas then surface fast enough.

It would seem that you need to gain a better understanding of DCS.


--
>replace spamblock with my family name to e-mail me

Jerome Meekings <walm-water-diver@spamblock.net> wrote:
> del <$/$new$/$@foodel.org.uk> wrote:
>
>> It can't be DCS because whales and dolphins don't breathe compressed
>> gas.
>
> You do not need to breathe compressed gas to get DCS. You just need to
> have enough time at depth to absorbe the gas then surface fast enough.

Would you care to explain where the extra gas comes from?
One lungful of gas cannot bend you even if you have lungs
like a whale. It is the constant exposure to 'new' gas
that causes the tissue tensions to rise towards saturation
levels. You have litres of gas disolved in your tissues on
the surface and very little will enter solution.

> It would seem that you need to gain a better understanding of DCS.

You too.

nigelH
Physics Police

Jerome Meekings wrote:

> del <$/$new$/$@foodel.org.uk> wrote:
>
>> It can't be DCS because whales and dolphins don't breathe compressed gas.
>
> You do not need to breathe compressed gas to get DCS. You just need to
> have enough time at depth to absorbe the gas then surface fast enough.
>
> It would seem that you need to gain a better understanding of DCS.
>
>
Since this is about cetaceans ( big fish that breathe air ), I found
this
<URL:http://www.seaworld.org/infobooks/KillerWhale/adapaqkw.html>
Look at section B, diving part b.
It doesn't mention speed of ascent and the articles appearing only mentioned
( the bit you snipped )
>>It's thought to cause bend like symptoms, as seen in SCUBA divers.

Do whales have necks?? Next time I see one I'll examine it for blotches.
--
del 8-)

"Nigel Hewitt" <nigelh@REMOVETHISnigelhewitt.co.uk> writes:
>Jerome Meekings <walm-water-diver@spamblock.net> wrote:
>> del <$/$new$/$@foodel.org.uk> wrote:
>>
>>> It can't be DCS because whales and dolphins don't breathe compressed
>>> gas.
>>
>> You do not need to breathe compressed gas to get DCS. You just need to
>> have enough time at depth to absorbe the gas then surface fast enough.
>
>Would you care to explain where the extra gas comes from?
>One lungful of gas cannot bend you even if you have lungs
>like a whale. It is the constant exposure to 'new' gas
>that causes the tissue tensions to rise towards saturation
>levels. You have litres of gas disolved in your tissues on
>the surface and very little will enter solution.
>
>> It would seem that you need to gain a better understanding of DCS.
>
>You too.

Ahem. Children, please.

Firstly, what does "You have litres of gas dis(s)olved in your tissues on
the surface and very little will enter solution" mean?

Secondly, it is entirely possible for breath-hold divers to get bent.

http://216.239.59.104/search?q=cache...hl=en&ie=UTF-8




--
"The road to Paradise is through Intercourse."
The uk.transport FAQ; http://www.huge.org.uk/transport/FAQ.html
[email me at huge [at] huge [dot] org [dot] uk]

Huge wrote:

> Ahem. Children, please.
>
> Firstly, what does "You have litres of gas dis(s)olved in your tissues on
> the surface and very little will enter solution" mean?
>
> Secondly, it is entirely possible for breath-hold divers to get bent.
>
<snip>Link
It's all confusing!
No mention of sonar tests or if the ama divers where molested by whales that
had been drinking and smoking.
I'll let it lie now and leave it to the whale watcher people to find the
answer.
--
del 8-)