Gavin Hellier / Elevated view over the Bosphorus and Sultanahmet from the Galata Tower in Istanbul, Turkey 2008

Merryn Thomas / Portrait of Gull (Laridae) on board the Ardrossan to Brodick Ferry, Scotland, August 2011.

Brent Stephenson / A cruise ship heads back up the Beagle Channel towards Ushuaia at the end of an Antarctic cruise. Beagle Channel, Tierra del Fuego Archipelago, South America, December.

Peter Cairns / 2020VISION / Grey seals (Halichoerus grypus) on haul out in fishing harbour with ferry in the background, Lerwick, Shetland Isles, Scotland, UK, June 2010. Photographer quote: 'These seals line up to take advantag...

Russell Cooper / Avocets (Recurvirostra avosetta) and Black Tailed Godwits (Limosa limosa) on the lagoon at Brownsea Island, Poole Harbour, Dorset, England, UK, October 2009.

Morley Read / Timelapse of a cable ferry crossing the Nangaritza River, seen from the deck of the ferry, Zamora Chinchipe Province, Ecuador, 2018. (non-ex)

Morley Read / Timelapse of a cable ferry crossing the Nangaritza River, Zamora Chinchipe Province, Ecuador, 2018. (non-ex)

Mark Carwardine / Killer whale or orca (Orcinus orca) surfacing next to BC Ferry. Salish Sea, Vancouver Island, British Columbia, Canada

Chris Gomersall / Small cruise ship 'Elizabeth G' owned and operated by the company Hebrides Cruises, just outside Oban harbour, Argyll, Scotland., UK, April.

Philippe Clement / Bigga, passenger and car ferry that operates on Bluemull sound service, SIC Ferries leaving Belmont on Unst, Shetland Islands, Scotland, UK, 2018

Philippe Clement / Passengers on deck of the Caledonian MacBrayne ferry boat Isle of Mull / An t-Eilean Muileach leaving the port of Oban, Scotland, May 2018

Philippe Clement / Ferry boat Linga sailing past sea cages / sea pens / fish cages from salmon farm in Laxo Voe, Vidlin on the Mainland, Shetland Islands, Scotland, UK, May 2018