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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Six of the small marsupials have been born in the 180-year-old Zoo’s Twilight World and keepers say they are thrilled.
A cloudy night will have drizzly spells throughout and into the early hours.
It will be a largely cloudy night with outbreaks of light rain. There will also be some hill fog.