Last year was a record year for jellyfish in British waters, according to scientists at Exeter University who keep track of the sightings.
This year there are unusual numbers of the barrel jellyfish. Its thought the mild winter has allowed more of them to survive.
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It will be mild and cloudy today with patchy rain. Light rain will continue into tomorrow, turning heavier in the afternoon.
Bob Crampton has the Thursday weather.
Bob Crampton has the latest weather forecast.