Ins and outs: Michael Marten photographs the difference the tide makes – in pictures

Beaumont Quay, Essex. 30 and 31 August 2011. High water 2.10pm, low water 7.40am Photograph: Michael Marten Bedruthan Steps, Cornwall. 25 and 31 August 2007. High water 4.30pm, low water 2pm Photograph: Michael Marten Crosby, Liverpool. 5 and 7 April 2008. High water 12 noon, low water 9am Photograph: Michael Marten Flamborough, Yorkshire. 27 and 28 September 2007. High water 5pm, low water 11.45am Photograph: Michael Marten Hayle river mouth, Cornwall. 18 March 2010. Low water 12 noon, high water 6pm. Photograph: Michael Marten Perranporth, Cornwall. 29 and 30 August 2007. Low water 12 noon, high water 8pm Photograph: Michael Marten Perranporth, Cornwall. 28 and 29 August 2007. High water 6pm, low water 11.20am Photograph: Michael Marten Severn Bridge, Monmouthshire. 8 and 9 March 2008. Low water 2.30pm, high water 8.20am Photograph: Michael Marten Salmon fishery, Solway Firth. 27 and 28 March 2006. Low water 5.20pm, high water 12 noon Photograph: Michael Marten St Mary's lighthouse, Northumberland. 17 and 20 September 2008. High water 5.50pm, low water 1pm Photograph: Michael Marten Wells-next-the-Sea, Norfolk. 10 September 2006. High water 8.40am, low water 3pm Photograph: Michael Marten