View Full Version : Girl lucky to be alive after sting by deadly jellyfish


Bi-Honar
04-27-2010, 07:46 PM
This story should be very interesting for Doktor R and as someone who has lived through a Sting Ray attack, I feel a very special connection with people who beat the odds against these highy evolved creatures. I had actually heard about this "jelly fish" (they are not considered true jellyfish) a few years back and they are as deadly as they are beautiful - in fact they are considered to have the most deadly venom in the world. They have more than 2.0 million tiny harpoon shaped needles that inject the venom directly to the blood stream! :bow2:

Girl lucky to be alive after sting by deadly jellyfish

Tue Apr 27, 1:34 AM

SYDNEY (AFP) - A 10-year-old Australian girl who survived being stung by the world's most venomous creature, the deadly box jellyfish, may have rewritten medical history, an expert said Tuesday. Schoolgirl Rachael Shardlow lost consciousness after being badly stung by the jellyfish while swimming in a river in eastern Queensland state with her brother in December, but lived to tell the tale.

"When I first saw the pictures of the injuries I just went, 'you know to be honest, this kid should not be alive'," said Jamie Seymour, professor of zoology and tropical ecology at James Cook University. "I mean they are horrific. Usually when you see people who have been stung by box jellyfish with that number of the tentacle contacts on their body, it's usually in a morgue," he told public broadcaster, the ABC.

Often deadly, the box jellyfish has long, trailing tentacles and is able to squeeze through even the smallest of nets as it is only the size of a fingernail. The venom is so overpoweringly painful that victims often go in shock and drown or die of heart failure before reaching shore. There is no effective antivenom for its sting, which attacks the heart, nervous system and skin, inducing shooting muscle pain, vomiting and a rapid rise in blood pressure.

Rachael was pulled from the Calliope River, near the town of Gladstone, by her 13-year-old brother with the jellyfish's tentacles wrapped around her legs. Before passing out, she told him could not see or breathe. After the rescue, she spent six weeks recovering in hospital before returning home. "I don't know of anybody in the entire literature where we've studied this where someone has had such an extensive sting that has survived," said Professor Seymour, adding that scientists were keen to monitor her recovery. "From our point of view it's really useful information that you very seldom, if ever, get your hands on."

The young girl's father, Geoff Shardlow, told the ABC that his daughter had suffered scarring to her legs and some short-term memory loss. "We've noticed a small amount of short-term memory loss, like riding a pushbike to school and forgetting she's taken a pushbike," he said. "The greatest fear was actual brain damage (but) her cognitive skills and memory tests were all fine."

raminio05
04-29-2010, 05:43 AM
I saw a documentary on this once. Two marine biologist went looking for one wearing thick wetsuits. Apparantly they are very hard to find. They finally found one and were able to get it in a sample bag. But when they got out, they didn't realize that they had some un-activated spores on their gloves and wetsuit where it had come into contact with the jellyfish and they accidentilly "stung" themselves. They got a first hand account of how it feels like to be stung by this miniscule little devil. The footage of them in the hospital, convulsing and sweating from the pain (for a week) was very intense.

Bi-Honar
04-29-2010, 09:40 PM
Yeah, gives the expression "felfel nabin che rizeh beshkan bebin che tizeh" a whole new meaning, doesn't it?

I still feel very lucky to be alive after my run in with a Stingray in shallow beach waters in Puerta Vallarta, Mexico. I guess I was unlucky to step on the poor guy in the muddy water. Not knowing (at the time) what was going on and why I was losing my balance I lifted my other foot and stepped on him a second time as he was trying to get away (of course not seeing him through the murky water). That's when I got hit and I got hit hard! Needless to say the pain from the impact alone was excruciating (I've never been shot, but don't imagine it would hurt much more) and I was a in a bit of a shock. Of course, I was happy that I was still alive and dragged my arse out of the water, where a concerned Sammy was waiting to assess the damage. I think, my panic level started to go up when she saw the damage on my back and started freaking out!!!

Luckily, it got me right on the elastic band of my bathing suit which heppened to be right on top of my tail-bone at that moment in time. So, it never punctured the skin. But the impact was so much that a 12" dia. area around the point of impact was blood shot (i.e. looked like an open wound, but no blood was coming out). I had problems sitting down for a week and something as simple as fresh water running over the area caused severe burning and pain. Things got worse, when these two nice nurses from Vancouver that were in our group told me that I have to go to the emergency room, if my skin started to smell funny!!! As if it wasn't bad enough already... I guess because there was no puncture and no venom got under my skin, it did not come to that, but even to this day, if I sit down for too long, my tail bone starts hurting and the skin over it gets itchy.

Real scary stuff and like you said, it's unbelievable how much damage these realtively small things can do (the one I stepped on couldn't have had a wing span of more than 4 ft.).

raminio05
04-30-2010, 10:01 AM
Wow. Thats one hell of a story Behrou. I didn't know that stingrays had venom on their barbs. I have heard that once those things go in though, they come out GRUDGINGLY.

raminio05
04-30-2010, 10:10 AM
BTW, i'm very curious as to what their toxin contains for them to be able to activate our nocireceptors to such a high level. I'm guessing that the pain is definately a result of chemical stimulation (i don't think the tiny harpoons would cause that much pain). I mean, were talking crazy amounts of pain here. Most of the people that die from this die from the pain (that seems almost unheard of). I looked around a bit online but couldn't find out. I'm gonna ask one of my professors to see if I can get an answer.

To think that this little fella can do that much damage:
http://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Irukandji-jellyfish-queensland-australia.jpg/800px-Irukandji-jellyfish-queensland-australia.jpg

Bi-Honar
04-30-2010, 03:38 PM
Wow. Thats one hell of a story Behrou. I didn't know that stingrays had venom on their barbs. I have heard that once those things go in though, they come out GRUDGINGLY.

I don't think that all of them do TBH. I know I read that on Wiki, but I still have a hard time wrapping my head around how they inject the venom. I think it may simply be secreted through the skin of the sting once it has punctured the skin.

http://upload.wikimedia.org/wikipedia/commons/4/47/Stringray%27s_sting.jpg

BTW, i'm very curious as to what their toxin contains for them to be able to activate our nocireceptors to such a high level. I'm guessing that the pain is definately a result of chemical stimulation (i don't think the tiny harpoons would cause that much pain). I mean, were talking crazy amounts of pain here. Most of the people that die from this die from the pain (that seems almost unheard of). I looked around a bit online but couldn't find out. I'm gonna ask one of my professors to see if I can get an answer.

To think that this little fella can do that much damage:
http://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Irukandji-jellyfish-queensland-australia.jpg/800px-Irukandji-jellyfish-queensland-australia.jpg

I don't think all of them are that small Ramin jaan. Apparently some are as big as 20 cm (8 in.) across, can weigh as much as 6 kg (13.5 lbs.) and have tentacles as long as 2 m (6 ft.). Based on the story and the fact that this girl had the tentacles wrapped around her legs, I think it was most likely this larger kind that attacked her in this case. I got this information from http://www.avru.org/compendium/biogs/A000042b.htm and there's some info there about the mechanism of the venom which you may find useful:

"Death can occur within 5 minutes following massive envenomation. The mechanism of toxicity are poorly understood, but death is thought to be due to respiratory failure, possibly central in origin, or to direct cardiotoxicity leading to A-V conduction disturbances or to paralysis of the cardiac muscle in systole. Patients may become unconscious before they can leave the water. There have been at least 63 confirmed deaths from envenomation by Chironex fleckeri in the Indo-Pacific region. In addition to cardiotoxic and neurotoxic properties, the venom also contains dermatonecrotic components producing patches of full thickness skin necrosis (see gallary images for 'Jellyfish') that may result in severe and permanent scarring. There is also a haemolytic component in Chironex fleckeri venom, although it is of doubtful clinical significance."