Sandra Bartocha / Line of Wooden posts running into the Baltic Sea, at dusk, National ParkVorpommersche Boddenlandschaft, Germany, May

Sandra Bartocha / Line of Wooden posts running into the Baltic Sea at dusk, National ParkVorpommersche Boddenlandschaft, Germany, May

Sandra Bartocha / Line of wooden posts running into the Baltic Sea at dusk, National ParkVorpommersche Boddenlandschaft, Germany, May

Sandra Bartocha / Wooden posts in the Baltic Sea at dusk, Zingst, Germany, National Park Vorpommersche Boddenlandschaft, Germany

Ernie Janes / Juvenile Turnstone (Arenaria interpres) sitting on sea defences, Norfolk, UK, September

Ernie Janes / Dunlin (Calidris alpina) perched on groyne post, Norfolk, UK

Ross Hoddinott / Groyne at sunrise. Swanage Bay, Dorset, UK, July 2010

Alan Williams / Dunlin (Calidris alpina) roosting on groyne rocks at high tide, Liverpool Bay, UK, January

Alan Williams / Colony of Redshank (Tringa totanus) and Dunlin (Calidris alpina) roosting on groyne rocks at high tide, Liverpool Bay, UK, January

Ross Hoddinott / Swanage bay (Blue Flag beach) with groyne in early morning. Dorset, UK. September 2009.

Ross Hoddinott / Swanage bay with groyne. Dorset, UK, April 2009.

Ross Hoddinott / Teignmounth Pier and groyne, South Devon, UK. June 2009.