The 40 Foot in Dublin (actually in Dun Laoghaire, a town, just south of the city center) is a tradition in Ireland. Hundreds of people line up to jump into the sea. It is about 4 C outside and the water is icy cold. I would have gone in too but someone had to film this. ;)
It was a great sight to see my brave girls join their daddy on the 40 Foot!!
Hope you have a wonderful and relaxing (if not refreshing) holiday!