Applying vinegar to common jellyfish stings deactivates the nematocysts, although not as effectively as hot water. This also applies to the Portuguese man o' war, which, although generally considered to be a jellyfish, is not (it is a siphonophore).
Applying vinegar to common jellyfish stings deactivates the nematocysts, although not as effectively as hot water. This also applies to the Portuguese man o' war which, although generally considered to be a jell,yfish, is not (it is a siphonophore).