You probably know that the Bristol Channel has the second highest tidal range in the world. Ever wondered what that looks like? This is the tidal range in the centre of Newport, a mile or three inland of the Channel, up the river Usk. The day before the photos were taken a pair of porpoises were spotted here, presumably having followed trout or salmon up-stream, which is why I took my camera.
Apologies for the reflection on the glass. The six story building should give you some idea of scale!