Richard Du Toit / Aerial photograph of container ship near Cape Town Harbour, Atlantic Ocean, South Africa, Western Cape Province, March 2010

Piper Mackay / Container freighter travelling through the Panama canal, Panama, November 2008

Mark Carwardine / Killer whale or orca (Orcinus orca) lob tailing neqar freight ship, Salish Sea, Vancouver Island, British Columbia, Canada

Mark Carwardine / Killer whale or orca (Orcinus orca) swimming near freight ship, Salish Sea, Vancouver Island, British Columbia, Canada

Michel Roggo / Ship on the main channel of the Danube river, the Bratul Sulina, at Crisan Danube Delta Biosphere Reserve, Romania, May 2014 . Photographed for The Freshwater Project

Brent Stephenson / Container ship, MV Rena, approximately 14 hours after becoming grounded on Astrolabe Reef, off of the Port of Tauranga, Bay of Plenty, New Zealand, October 2011.

Loic Poidevin / Container Ships, Prince Rupert Harbour, British Columbia, Canada, June 2013.

Staffan Widstrand / Shipping terminal with large freight ship, Pulicat Lake, Tamil Nadu, India, January 2013.

Philippe Clement / Container ship in a rough sea during storm, North Sea, Belgium. March 2008.

Philippe Clement / Container ship entering port during storm, North Sea, Ostend, Belgium. March 2008.

Philippe Clement / Cargo ship on the North Sea, Belgium. March 2008.

Onne van der Wal / Tug and barge carrying containers in New York Harbour, USA.

Nick Upton / Small container ships coming and going from Hook of Holland harbour. Netherlands, April, 2010.

Nick Upton / Motor barge and small container ship passing one another near Hook of Holland harbour. Netherlands, April, 2010.

Juergen Freund / Sugar cane (Saccharum officinarum) harvest delivered to sugar refinery by freight train. Bundaberg, Southern Queensland. September 2016.