The Great East Swim was officially launched this morning in Suffolk.
The event in June will see thousands of swimmers take the plunge at Alton Water Reservoir near Ipswich.
Swimmers can chose from a half mile, to 5km swim, with thousands of pounds raised for charity at the same time.
Great East Swim dates announced
Details have been announced of this year's Great East Swim.
The event at Alton Water near Ipswich, will take place on Saturday the 22nd June. The swim is now in its fifth year and offers five different courses ranging from half a mile to five kilometers.