In Greenteeth's meditations pages we aim to bring you a little sample of the rewarding and restorative experiences we all need from time to time. In our stress laden world the sea is always a great place to relieve the tensions of everyday life. Sometimes our favourite places can be close to where we live, sometimes a plane ride away so we can only visit once or twice a year. This shot of a wave about to break on the beach at Alvor, Portugalshows how a photograph can freeze a memory so the moment can be recalled and reflected on years later.