The annual Golden Sands Polar Bear dip in Whitehaven aims to raise more than £25,000 for charity.
Around 100 swimmers took part this year, with hundreds more watching on.
Samantha Parker has the full report:
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Mr Justice Green sentenced three men to a total of more than 50 years in prison, for the "evil" killing of 14-year-old Jordan Watson.
Video interviews police conducted with the three men who killed Carlisle schoolboy Jordan Watson have been released.
The family of murdered schoolboy Jordan Watson say getting justice for their son has helped restore their faith in people.