Since 2003 Michael Marten has travelled to different parts of the British coast to photograph identical views at high and low tide, six or eighteen hours apart. His beautiful and surprising photographs reveal how the twice daily rhythm of ebb and flood can dramatically transform the landscape.
Can you name the places? Answers at the end.
A: Cuckmere Haven, Sussex, August
B: Blackpool, Lancashire. 16 August 2010
C: Perranporth, Cornwall, August 2007
D: Worms Head, Glamorgan, 25 June 2005
E: Crosby, Liverpool., April 2008
F: Salmon fishery, Solway Firt, March 2006