Warning, dangerous currents. The sign surprized me as the Irish sea never looked so calm. As I was contemplating a swim, bypassing the warning, I witnessed an old man swimming quite easily. I approached him and asked about the warning. He told me that the currents were strong only in some rare circumstances and that his uncle died at this place 60 years ago, during a storm. I went to swim in the 18°C water and enjoyed it even more than usual.