Monday, Mar 16, 2009 at 13:33
Although visitors are at risk of being stung all year round, Stinger Season in the Whitsundays runs every year from October through to May. During this period, jellyfish are prevelant in the waters around the mainland, islands and have occasionally been found out on the Reef. If you are stung,
Whitsunday Shire Council provide vinegar to treat stings at each of the beaches on the mainland.
There are two main types of "stingers" in the area and they are the Box Jellyfish and the Irukandji Jellyfish.
Below is a little more information on these.
Irukandjis are a group of small jellyfishes whose stings can cause serious illness in previously
well humans.
Irukandjis are rare, but the stings can be life-threatening. It is worth taking some simple precautions so that you can enjoy your holiday with peace of mind.
The initial sting from most Irukandji species is quite mild, feeling like sea lice or a mosquito bite. There is often no mark, or perhaps small red "goose pimple" marks. Often, Irukandji stings will sweat profusely in the immediate sting region only.
Between November and May, 'boxies' as they're affectionately known migrate to Australia's shallow, murky coastal waters and estuaries. Their travelling companion is the tiny Irukandji, Carukia barnesi, which, while only about the size of a thumbnail, can land an adult in intensive care, or even result in death.
Deadly stings come in big packages
Box jellyfish and Irikandji both feature a roughly box-shaped bell. The box jellyfish has a cluster of tentacles at each corner; whilst the Irikandji has only a single tentacle.
Each of their trailing tentacles is packed with nematocysts, stinging cells that contain a tiny harpoon attached to venom-filled bulb. Each species has several types of nematocysts, reflecting their individual ways of feeding and catching prey.
It's only when a box jellyfish gets over a certain size that it becomes lethal to vertebrates.
Once their bell reaches 8-10 cm, not only does the venom become more toxic per drop, but the ratio of highly venomous nematocysts per tentacle changes as
well,This is related to their food preference, below 8cm they prefer to feed on prawns and above they like fish. Not only are fish larger and faster than prawns, the vertebrate nervous system is also completely different, so the jellyfish must adapt their prey submission technique to match; it's just unfortunate that they have the same deadly effect on humans."
About 2-3 metres of tentacle is needed to kill an adult human, and when the box jellyfish's bell is below 8cm there is simply not enough tentacle length to skin surface for a human to be fatally stung .
However one shouldn't take the risk of assuming that if you see a small boxy in the water with you it won't kill you - it could always be an early developer - or an Irukandji."
Irukandji syndrome
While a sting from the smaller Irukandji jellyfish may not kill outright, it causes what is known as Irukandji syndrome, a set of symptoms that includes lower back pain, muscle cramps, vomiting, fluid on the lungs, hypertension and heart failure (if untreated).
Despite the obvious dangers, people continue to throw caution to the winds and swim in stinger-infested waters, in the mistaken belief that they won't be stung. The simplest way to avoid being stung is to use common sense, Stay out of the water when a beach is closed, or swim in the stinger proof enclosures that are located on many of the popular beaches.
Protective clothing like a full-body lycra suit can also help, if you can't see through it, a jellyfish can't sting through it
If you do get stung, your only hope of survival might come from a humble bottle of vinegar, which disables the nematocysts and stops them firing.
Supported by Surf Lifesaving Australia and local businesses, bottles of vinegar are found on many beaches in North Queensland," she says.People should be pro-active and not only pack their sunscreen, but to pack their vinegar too - it might save more than just their own life.
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Follow Up By: Big Kidz - Monday, Mar 16, 2009 at 13:51
Monday, Mar 16, 2009 at 13:51
Well you know I am not going to get in the water now after reading all that! Think I will take up position with a good book on deck !! Wasn't looking forward to wearing a suit anyway!
Jen
PS thanks for all the info, very informative.
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