Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) accompanied by pilotfish (Naucrates ductor) as it cruises beneath the surface of the Red Sea, close to Little Brother Island. The Brothers Islands, Egy...

Alex Mustard / Blue shark (Prionace glauca) as it cruises beneath the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August.

Gavin Hellier / Luxury cruise liner infront of Midtown Manhattan across the Hudson River, New York, USA October 2011. No release available.

Alex Mustard / A large Great hammerhead shark (Sphyrna mokarran), about 4m in length, cruises overhead. Bahamas, Tropical West Atlantic Ocean.

Alex Mustard / A lone Caribbean reef shark (Carcharhinus perezi) cruises over sand ripples. Walkers Cay, Northern Bahama Islands, Republic of Bahamas.

Alex Mustard / Caribbean reef shark (Carcharhinus perezi) cruises over a coral reef. Near Grand Bahama, Bahamas. Tropical West Atlantic Ocean.

Alex Mustard / Caribbean reef shark (Carcharhinus perezi) cruises over a coral reef. Near Grand Bahama, Bahamas. Tropical West Atlantic Ocean.

Franco Banfi / MSC Poesia cruise ship owned and operated by MSC Cruises. Dominica, Caribbean Sea, Atlantic Ocean.

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

Richard Robinson / Smooth hammerhead shark (Sphyrna zygaena) cruises on the surface at the edge of New Zealand's continental shelf.

Richard Robinson / Smooth hammerhead shark (Sphyrna zygaena) cruises on the surface at the edge of New Zealand's continental shelf.

David Fleetham / Whitetip reef shark (Triaenodon obesus) cruises over a sandy bottom off the island of Maui, Hawaii.

David Fleetham / Whitetip reef shark (Triaenodon obesus) cruises over a sandy bottom off the island of Maui, Hawaii.

Alex Mustard / Great hammerhead shark (Sphyrna mokarran) female cruises over the sand in shallow water. South Bimini, Bahamas. The Bahamas National Shark Sanctuary. Gulf Stream, West Atlantic Ocean.

Alex Mustard / Whitetip shark (Carcharhinus longimanus), accompanied by Pilotfish (Naucrates ductor), swims towards the camera as it cruises beneath the surface of the Red Sea, close to Little Brother Island. The Br...

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) is accompanied by pilotfish (Naucrates ductor) as it cruises beneath the surface of the Red Sea, close to Little Brother Island. The Brothers Islands N...

Rick Price / Le Lyrial expedition cruise ship sailing past icebergs, Cuverville Island, Antarctic Peninsula, Antarctica. December 2015.

Constantinos Petrinos / Cruise ship from 'Celebrity Cruises' anchored outside Mykonos Town since it is unable to enter the harbor due to its size. Mykonos Island, Cyclades, Aegean Sea, Mediterranean, Greece, August 2007.

Michael Hutchinson / Cruise ship and passengers in front of snow covered mountains, Paradise Bay, Antarctica, January.

Michael Hutchinson / Cruise ship passenger in outdoor hot tub, near mountains, Paradise Bay, Antarctica, January.

Michael Hutchinson / Cruise ship in front of snow covered mountains, Paradise Bay, Antarctica, January.

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) accompanied by pilotfish (Naucrates ductor) as it cruises beneath the surface of the Red Sea in the late afternoon, close to Little Brother Island. The...

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) accompanied by pilotfish (Naucrates ductor) as it cruises beneath the surface of the Red Sea, close to Little Brother Island. A rainbow runner (Elagati...

Alex Mustard / Oceanic whitetip shark (Carcharhinus longimanus) accompanied by pilotfish (Naucrates ductor) as it cruises beneath the surface of the Red Sea, close to Little Brother Island. The Brothers Islands, Egy...

Alex Mustard / A gang of Greater amberjacks (Seriola dumerili) cruises in open water. Osalla, Gulf of Orosei, Sardinia, Italy. Mediterranean Sea.

Mike Potts / View of MV Polarlys, a small cruise ship specializing in coastal cruises along the North Norway coast, Vardo harbour, Vardo, March 2013.

Alex Mustard / Blue shark (Prionace glauca) cruises beneath the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August.

Alex Mustard / Blue shark (Prionace glauca) cruises beneath the surface of the English Channel. Penzance, Cornwall, England, British Isles. North East Atlantic Ocean, August.

Alex Mustard / Caribbean reef shark (Carcharhinus perezii) with a pair of bar jacks (Caranx ruber) cruises through a school of black durgon (Melichthys niger) above a coral reef, East End, Grand Cayman, Cayman Isla...

Chris Gomersall / 2020VISION / Tobermory harbour, with posters advertising wildlife watching cruises, Mull, Inner Hebrides, Scotland, July 2011.

Doug Perrine / Blackfin / Blacktip reef shark (Carcharhinus melanopterus) cruises the shoreline, hunting for Swift / Crested tern chicks (Sterna bergii) that are washed into the water by the rising tide, Turu Cay, T...

Doug Perrine / Blackfin / Blacktip reef shark (Carcharhinus melanopterus) cruises the shoreline, hunting a Swift / Crested tern chick (Sterna bergii) that has been washed into the water by the rising tide, Turu Cay,...

Alex Mustard / A large female Bull shark (Carcharhinus leucas) cruises over sea grass. Walkers Cay, Northern Bahama Islands, Republic of Bahamas. March

Alex Mustard / Lemon shark (Negaprion brevirostris) accompanied by Remoras (Echeneis naucrates) cruises over sponges on a coral reef. Grand Bahama. Bahamas. Tropical West Atlantic Ocean.

Alex Mustard / Lemon shark (Negaprion brevirostris) accompanied by Remoras (Echeneis naucrates) cruises over sponges on a coral reef. Grand Bahama. Bahamas. Tropical West Atlantic Ocean.

Alex Mustard / Caribbean reef shark (Carcharhinus perezi) cruises over a coral reef. Near Grand Bahama, Bahamas. Tropical West Atlantic Ocean.

Alex Mustard / A large female Oceanic whitetip shark (Carcharhinus longimanus) cruises below the surface, Cat Island, Bahamas. Tropical West Atlantic Ocean.

Kevin Schafer / Zodiac cruises along face of Monaco Glacier, Leifdefjorden, Svalbard, Norway

Pete Oxford / Sailboat used for small cruises, S/V Mary Anne, Galapagos Islands, Ecuador

Onne van der Wal / Supply ship for the clipper cruises sailing off the south coast of Grenada, Caribbean.

Barry Bland / T.S.S. "Earnslaw" steam boat, built in 1912 to service the sheep stations on Lake Wakatipu. It is powered by two coal fired steam engines and is now used to take tourists on cruises to Walter Peak She...

Barry Bland / A fireman stoking the boiler on the "T.S.S. Earnslaw" steam boat, built in 1912 to service the sheep stations on Lake Wakatipu. It is powered by two coal fired steam engines and is now used to take to...

Barry Bland / T.S.S. "Earnslaw" steam boat, built in 1912 to service the sheep stations on Lake Wakatipu. It is powered by two coal fired steam engines and is now used to take tourists on cruises to Walter Peak She...

Angelo Giampiccolo / Luxury yacht "Wave Dancer", specialising in dive cruises in the Belize Cayes, Caribbean. The bar for decompression can be seen underwater at -3 meters.

Rick Tomlinson / Dive boat cruises through the pristine turquoise waters rich reef surrounding Huahine, French Polynesia, part of the Society Islands.

Angelo Giampiccolo / Two women sitting on the foredeck of high performance motoryacht "Azzurra 63'", as it cruises off Procida Island, Italy. The luxury yacht was built by Naples-based specialist Cantieri di Baia. It is 1...

Rick Tomlinson / Najad 490 cruises the Swedish Archipelago at sunset.

Rick Tomlinson / 65 metre schooner "Adix" cruises past a small beach in the Grenadines, Caribbean.

Angelo Giampiccolo / Two women sitting on the foredeck of high performance motoryacht "Azzurra 63'", as it cruises off Procida Island, Italy. The luxury yacht was built by Naples-based specialist Cantieri di Baia. It is 1...

Angelo Giampiccolo / Woman filming from the foredeck of high performance motoryacht "Azzurra 63'", as it cruises off Procida Island, Italy. The luxury yacht was built by Naples-based specialist Cantieri di Baia. It is 18....

Angelo Giampiccolo / Passengers relaxing in the luxurious deck of high performance motoryacht "Azzurra 63'", as it cruises off the coast of Procida Island, Bay of Naples, Italy. The luxury yacht was built by Naples-based...

Angelo Giampiccolo / Woman sunbathing on the deck of high performance motoryacht "Azzurra 63'", as it cruises off Procida Island, Italy. The luxury yacht was built by Naples-based specialist Cantieri di Baia. It is 18.90...

Rick Tomlinson / A Najad 490 cruises the Swedish Archipelago.

Onne van der Wal / The small Starbuck cruises under the Newport Bridge, Rhode Island, USA with the Rose Island lighthouse in the background.

Barry Bland / T.S.S. "Earnslaw" steam boat, built in 1912 to service the sheep stations on Lake Wakatipu. It is powered by two coal fired steam engines and is now used to take tourists on cruises to Walter Peak She...

Rick Tomlinson / "Wally B" cruises along under assymetric at the Maxi Rolex Cup in Sardinia, 1999.

Richard Du Toit / African Elephant (Loxodonta africana) drinking as tourist boat cruises by, Chobe River, Botswana

Alex Mustard / Blue shark (Prionace glauca) cruises beneath the surface of the English Channel with sunbeams and lens flare. Penzance, Cornwall, England, United Kingdom. British Isles. North East Atlantic Ocean.

Alex Mustard / Three blue sharks (Prionace glauca) cruises beneath the surface. Penzance, Cornwall, England, United Kingdom. British Isles. North East Atlantic Ocean.

Frederique Olivier / Tourists on a zodiac iceberg cruise, Scoresby Sound, Greenland, 2016.

Frederique Olivier / Tourists on a zodiac iceberg cruise, Scoresby Sound, Greenland, 2016.

Philippe Clement / Cruise ship leaving Lerwick harbour, Shetland Islands, Scotland, UK. May 2018

Philippe Clement / Cruise ship departing Lerwick harbour, Shetland Islands, Scotland, UK. June 2018