About 150 people were stung by what officials said was a lion’s mane jellyfish weighing nearly 40 pounds, which turned the tranquil beach into a frenzied sea of screaming children and aching adults with red, sore feet and legs. NY Times article.
The Lion's Mane jellyfish is purported to be the largest animal in the world, larger than even the sperm whale.
The following is taken from DermNet's section on Marine Wounds and Stings:
If you or a companion is stung by a jellyfish:
* Avoid moving the affected limb.
* Remove nematocysts and tentacles from the skin using gloves and forceps. Razor blades can be used to shave off nematocysts.
* If stung by box jellyfish apply vinegar (5% acetic acid), or in its absence, salt water for 30 minutes. (B=Note Box Jellyfish are only in Australian and South Asian waters)
* If stung by the Portuguese man of war, thoroughly rinse exposed areas with seawater (vinegar is not helpful).
* Ice or an ice pack can help with pain while seeking medical attention.
* Antivenin injections are available in some medical centres for specific jellyfish, and are particularly recommended for box jellyfish stings.
Do not rub with a towel or use fresh water as this may cause further damage by causing further nematocyst discharge. Contrary to popular belief urine and alcohol can exacerbate injury and are not recommended.