Sometimes there is some sort of sea fog coming in. It is quite rare because normally it is to windy for the fog to stay but about twice a year you get this really dense fog which makes the orange lights of Menai bridge illuminate it in a different way.

A foggy night on Menai bridge - Menai Bridge visitor guide showing a virtual tour of 'A foggy night on Menai bridge' linked to an interactive map with local and travel information. 360° panoramas from Anglesey.