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This past weekend is usually the coldest of the year for water temperatures in Gorleston-on-Sea in Norfolk but that didn't stop 125 people having a dip.
They raised more than £10,000 for the Cystic Fibrosis Trust. It was organised by Alexandra and Kevin Sayers whose four year old son Enzo was diagnosed with the disease as a baby.
Click below to watch the report from ITV News Anglia's Megan Boot: