Have a question, does the barb detach itself from the stingray then grow another? Does say Irwin pulled the serrated barb from his chest...
Wikipedia had updated there encyclopedia already.
Irwin's attack and death is in it....
http://en.wikipedia.org/wiki/Stingray
Aggression
Dasyatids generally do not attack aggressively, or even actively defend themselves. When threatened, their primary reaction is to swim away. However, when they are attacked by predators or stepped on, the barbed stinger in their
tail is mechanically whipped up. This attack is normally ineffective against their main
predator:
sharks.
[1] Humans are usually stung in the
foot; it is also possible, although less likely, to be stung by brushing against the stinger. Contact with the stinger causes local
trauma (from the cut itself), pain and swelling from the venom, and possible infection from parts of the stinger left in the wound. Injuries to humans include, but are not limited to:
poisoning, punctures, severed
arteries and possible death. Fatal stings, such as that which killed
Australian naturalist and
television personality Steve Irwin in 2006,
[2] are extremely rare (as of 1996, worldwide known deaths from stingray barb injuries numbered 17),
[3] but can occur if a stinger punctures the heart or chest, causing complications due to both the sting's location and the poison in the barbs. As of 2001 there has been only one person documented to have survived a stingray injury to the heart.
[4]
Treatment for stings includes hot water (as hot as the victim can stand), which helps ease pain and break down the venom, and
antibiotics. Other possible pain remedies include
papain (
papaya extract, contained in unseasoned powdered meat tenderizer), which may break down the protein of the toxins, though this may be more appropriate for
jellyfish and similar stings. Folklore incorrectly holds that one should urinate on the stung area; in actuality, urine and vinegar are not effective treatments.
[1] Pain normally lasts up to 48 hours but is most severe in the first 3060 minutes and may be accompanied by
nausea,
fatigue,
headaches,
fever and chills