David Fleetham / Schooling Lemon / Milletseed butterflyfish (Chaetodon miliaris) below kayakers off Maui, Hawaii.

Michael Pitts,Michael Pitts / Divers on the wreck of the tugboat, 'Tienstin'. Abu Galawa, Red Sea, July 2010

Denis-Huot / Killer whales (Orcinus orca) off the coast of British Columbia, North Pacific Ocean

Staffan Widstrand / Kayaking past icebergs in Svalbard, Norway, July 2011. Model released.

Ole Jorgen Liodden / Fiordland crested penguin (Eudyptes pachyrhynchus) riding a foamy wave into the shore. Westland, New Zealand, Vulnerable species. November.

Steven Kazlowski / Kayaker in front of Bear Glacier, Kenai Fjords National Park, Alaska, USA. No release available.

Alex Mustard / 2020VISION / Kayaker on the River Etive, Highlands, Scotland, UK, April 2012. Did you know? Freshwater ecosystems have a higher density of species than either the land or the sea.

Nick Turner / Man pulling his sea kayak into the sea at Caerfai Bay on the Pembrokeshire Coast Path, Wales, UK, June 2009

Alex Mustard / 2020VISION / Young people enjoying the surf at Fistral Beach, Newquay, Cornwall, UK, July 2011.

Bryan and Cherry Alexander / Gentoo penguin (Pygoscelis papua) standing on volcanic beach at Whalers Bay, with tourists in kayak beyond. Deception Island, South Shetland Islands, Antarctica, 2009.

Juergen Freund / Child in canoe beside traditional fishing boat, Semporna, Sabah, Borneo, Malaysia, June 2009.

Matthew Maran / Surfer Benj Yougson at Long Beach. Pacific Rim National Park Reserve, west coast of Vancouver Island, Canada, September 2010. Model released