Contributing factors include warmer waters, global warming and ‘wind direction’, according to Stewart Petrie, the director of Environmental Health.

He said: ‘This could be a weather issue more than a climate one. People are more likely to see jellyfish in the north of the Island, as opposed to somewhere like St Ouen, as there is less of a distance for them to get to shore in places like Bouley Bay.’

Mr Petrie added that the types of jellyfish commonly seen in Jersey waters have less of a nasty sting than others around the world and he recommended pouring either sea water on the affected area or ‘scraping off the sting with a credit card’.