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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Heavy showers overnight, hail and thunder possible, humid
Heavy showers overnight, humid, thunder possible
The Maltings shopping centre was closed to the public after a small amount of the Novichok substance was found in the area.