A team of extreme cold water swimmers will attempt a 70km relay across the Irish sea between the Isle of Man and Northern Ireland.
The swimmers are Olive Conroy (Ireland), Conor Turner (Ireland), Elina Makïnen (Finland), Anna- Carin Nordin (Sweden), Rory Fitzgerald (Ireland) and Carole Laporte (Isle of Man).
The water temperature is likely to be around 11 degrees.