Around 145 people ran naked into the North Sea at dawn in an attempt to break the skinny dipping world record.
The event at Druridge Bay in Northumberland, was in aid of mental health charity Mind.
It failed to match the record set at Rhossili beach in Wales in 2011, where 400 people braved the cold.
Organiser Jacqueline Higginson, 34, from Whitburn, said: "I did the skinny dip last year where we broke the world record, I don't think there were enough to do it today but there were enough of us for it to be a lot of fun.
"We wanted to celebrate our bodies and the Autumn Equinox.
"We chose Mind because I feel very close to the issues around mental health both personally and as a paramedic as I see it all around me.
"And hopefully I think we have raised thousands of pounds for Mind."
The National Trust, which owns the section of beach, gave its permission for the event.
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