-rinse the area with sea water. Do not scrub or wash with fresh water which will aggravate the stinging cells. Do not pour sun lotion or spirit-based liquid on the area.
-deactivate remaining cells with a vinegar rinse.
If no vinegar is available use urine except the Box jelly and Irukandji. Ask a mate for a golden shower! Really! Preferably male urine as it's considered to be more sterile.
-lift off any remaining tentacles with a stick or similar.
-If cells still linger, dust with flour and carefully scrape off with a blunt knife. [img]images/smiles/icon_eek.gif[/img] [img]images/smiles/icon_eek.gif[/img]