Sharks were spotted in the sea, mixing with Santa, reindeer - and even a turkey.
Here are some of Brian Murfield's pictures from the event.
1. Boxing Day dip
Sharks make their way down Khyber Pass. Photo: Brian Murfield
2. Boxing Day dip
Dippers dash into the North Sea. Photo: Brian Murfield
3. Boxing Day dip
Sleights FC youngsters ready for the dip. Photo: Brian Murfield
4. Boxing Day dip
Santa, a turkey, even a Christmas tree, taking part in the dip. Photo: Brian Murfield