Global warming seems to affect the seas in such a way that there is an increase in parasites. Most people have heard of this in terms of fish in the North Sea -and Salmon. But they can get under the skin of people also. The way to deal with this is this: If you see something that looks like a sore after going in the water it is possible it is a parasite. These sorts of creatures do not like to be squeezed. But just squishing them is not enough. After squishing that area one should apply alcohol.
[The squishing is to get rid of the protective liquid they set up as a defense. You have to get rid of that liquid first. Then rub the alcohol into that area --and that gets rid of the parasites.]
[If this does not seem like the subject for a blog let me mention the Gemara in Hulin סכנתא חמירא מאיסורא "One must be stricter about danger than prohibitions."
