«This species is small, less than two centimeters (three - quarters of an inch) across the bell, they're 96 % water, they lack a defined brain or central nervous system, and yet they're using their tentacles and nematocyst clusters like experienced fishers use their lines and lures,» lead author Robert Courtney said. (sciencedaily.com)
But Fenner's team found that when applied to the sting of Physalia physalis, a jellyfish newly identified in Australian waters, vinegar actually caused 30 per cent of nematocysts to fire (Medical Journal of Australia, vol 158, p 498). (newscientist.com)
Capsules on the tentacles called nematocysts contain a hollow, coiled thread. (newscientist.com)