Philip Stephen / Fishing vessel 'Harvester' winching her catch onboard amid a group of hungry seabirds. North Sea, Europe, December 2011. Property released.

Philip Stephen / North Sea trawler on calm sea, May 2010.

Philip Stephen / Fishing vessel "Harvester" powering through huge waves while operating in the North Sea. Europe, January 2009. Property released.

Philip Stephen / Fishing vessel "Ocean Pioneer" nearing Fraserburgh Harbour, with waves crashing against the harbour wall. Scotland, February 2011.

Philip Stephen / Fishing vessel "Harvester" surrounded by Northern gannets (Morus bassanus) whilst hauling the trawl net onboard. North Sea, Europe, February 2011. Property released.

Philip Stephen / Fishing vessel "Harvester" heading to North Sea fishing grounds in stormy weather. Europe, November 2010. Property released.

Philip Stephen / Huge wave enveloping fishing vessel "Harvester" while operating in the North Sea. Europe, November 2010. Property released.

Philip Stephen / Fishing vessel "Harvester" on a stormy North Sea. Europe, November 2010. Property released.

Philip Stephen / Wave breaking as it hits shoreline at Peterhead, Scotland, September 2010.

Philip Stephen / Fishing trawler surrounded by seabirds as the net is hauled onboard. North Sea, September 2010. Property released.

Philip Stephen / Fishing vessel "Ocean Harvest" in huge waves on the North Sea, September 2010. Property released.

Philip Stephen / Killer whale (Orcinus orca) breaking surface. North Sea.

Philip Stephen / Trawler in low light on the North Sea, July 2010. Property released.

Philip Stephen / Trawler "Ocean Harvest" hauling net onboard. North Sea, June 2010. Property released.

Philip Stephen / "Ocean Harvest " fishing on the North Sea, surrounded by seabirds, June 2010. Property released.

Philip Stephen / Fishing vessel "Harvester" and the "Jotun B" oil production platform. North Sea, May 2010.

Philip Stephen / Fishing vessel "Harvester" and the "Jotun B" oil production platform. North Sea, May 2010.

Philip Stephen / Fishing vessel "Ocean Harvest" on the North Sea, May 2010. Property released.

Philip Stephen / Fishing vessel "Ocean Harvest" on the North Sea, May 2010. Property released.

Philip Stephen / Fishing vessel "Harvester" hauling fishing gear in the dark, May 2010. Property released.

Philip Stephen / "Beryl Bravo" oil platform blowing off gas, North Sea, March 2010.

Philip Stephen / Fishing vessel "Harvester" taking a good haul of Saithe (Pollachius virens) aboard, at night on the North Sea, 60 miles North East of the Shetlands. February 2010, Property released.

Philip Stephen / Fishing vessel "Ocean Harvest" operating close to the "Beryl Alpha" production platform, 160 miles Northeast of Aberdeen, in the North Sea. March 2010.

Philip Stephen / Gull flying over fishing vessel "Harvester" in heavy seas, North Sea, February 2010. Property released.

Philip Stephen / Fishing vessel "Harvester" trawling at twilight on the North Sea. February 2010, Property released.

Philip Stephen / Saithe (Pollachius virens) on netting, onboard a trawler on the North Sea, Europe.

Philip Dalton / Common zebra (Equus quagga) swimming across the Mara River on migration, Masai Mara GR, Kenya

Philip Dalton / Nile Crocodile (Crocodylus niloticus) approaching Common Zebra (Equus burchellii) as it swims across Mara river during migration, Masai Mara GR, Kenya

Philip Dalton / Nile Crocodile (Crocodylus niloticus) grabbing Common Zebra (Equus burchellii) as it swims across Mara river during migration, Masai Mara GR, Kenya

Philip Dalton / Nile Crocodile (Crocodylus niloticus) approaching Common Zebra (Equus burchellii) mother and foal as they swim across Mara river during migration, Masai Mara GR, Kenya

Philip Dalton / Nile Crocodile (Crocodylus niloticus) grabbing Common Zebra (Equus burchellii) as it swims across Mara river during migration, Masai Mara GR, Kenya

Philip Dalton / Common Zebra (Equus burchellii) swimming across Mara river during migration, Masai Mara GR, Kenya

Philip Dalton / Waterspout over Lake Victoria, Uganda

Philip Dalton / Waterspout over Lake Victoria, Uganda

Philip Dalton / Mexican free-tailed bats (Tadarida brasiliensis) flying from / to Bracken Cave and Echert James Bat Caves, Texas, USA

Philip Dalton / Mexican free-tailed bats (Tadarida brasiliensis) flying from Bracken Cave and Echert James Bat Caves, Texas, USA

Philip Dalton / Red tailed hawk {Buteo jamaicensis} flying amongst and predating on Mexican free-tailed bats (Tadarida brasiliensis) flying from / to Bracken Cave and Echert James Bat Caves, Texas, USA

Philip Dalton / Red tailed hawk {Buteo jamaicensis} flying amongst and predating on Mexican free-tailed bats (Tadarida brasiliensis) flying from / to Bracken Cave and Echert James Bat Caves, Texas, USA

Philip Dalton / Eruopean praying mantis (Mantis religiosa) and brown cricket on flowers, Europe

Philip Dalton / Cheetah (Acinonyx jubatus) female with cub lying in shade under her body, Masai Mara, Kenya

Philip Stephen / Banff registered pair trawlers "Beryl" and "Onward" fishing for Haddock on the North Sea, July 2009.

Philip Stephen / North Sea trawler heading west at dusk, followed by seabirds, September 2009. Property released.

Alex Mustard / Southern / pacific blue-ringed octopus (Hapalochlaena maculosa) swims across the seabed. Port Philip Bay, Blairgowrie, Melbourne, Victoria, Australia.

Alex Mustard / A Southern sand octopus (Octopus kaurna) digs into the sediment with its long arms at night. While many octopus dig holes, this is the only known species that forms a mucous-lined burrow complete with...

Alex Mustard / Southern sand octopus (Octopus kaurna), photographed at night. This species spends the day burried, with a thin chimney to the surface. Port Philip Bay, Blairgowrie, Melbourne, Victoria, Australia

Alex Mustard / Southern keeled octopus (Octopus berrima) moves across the sand at night. Port Philip Bay, Blairgowrie, Melbourne, Victoria, Australia.

Philip Stephen / Fishing trawler 'Harvester' operating in difficult conditions on the North Sea, Europe, December 2011. Property released.

Philip Stephen / Fishing trawler 'Harvester' operating in difficult conditions on the North Sea, Europe, December 2011. Property released.

Philip Stephen / Fishing vessel 'Harvester' battling with the elements on the North Sea, Europe, December 2011. Property released.

Philip Stephen / North Sea trawler 'Harvest Hope' engulfed in seaspray, Europe, February 2012. All non-editorial uses must be cleared individually.

Philip Stephen / Fishing trawler 'Harvest Hope' with Buzzard oilfield in the background. North Sea, Europe, February 2012. All non-editorial uses must be cleared individually.

Philip Stephen / Buzzard offshore production field, North Sea, February 2012. All non-editorial uses must be cleared individually.

Philip Stephen / MFV trawler "Harvester" in storm force gales and heavy seas, 70 miles east of the Shetlands. Winds gusting to 83 Knots. January 2009. Property Released.

Philip Stephen / Wick registered fishing vessel "Opportune" using the seine net method of fishing for haddock and flatfish. St. Magnus Bay, Shetland, March 2009.

Philip Stephen / Wick registered fishing vessel "Opportune" using the seine net method of fishing for haddock and flatfish. St. Magnus Bay, Shetland, March 2009.

Philip Stephen / Fishing vessel "Ocean Harvest" rolling in heavy seas, North Sea, October 2008. Property Released.

Philip Stephen / Fishing trawler at sunset on the North Sea, 2008. Property released.

Philip Stephen / Oil drilling rig "John Shaw", situated at the Don oilfield 240 miles North East of Aberdeen, in heavy seas. North Sea, 2009.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Supply ship "Rem Supplier" waiting for the sea-state to decrease to allow supplies to be offloaded to an oilrig on the North Sea. March 2009.

Philip Stephen / Crewman on a North Sea trawler holding a 25kg ling (Molva molva). Model released.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Wick registered fishing vessel "Opportune" using the seine net method of fishing for haddock and flatfish. St. Magnus Bay, Shetland, March 2009.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Lights illuminate Claymore production platform at night, which is situated 100 miles north east of Aberdeen, March 2008

Philip Stephen / Fishermen watch the sun go down from a fishing vessel in the North Sea

Philip Stephen / Wick registered fishing vessel "Opportune" using the seine net method of fishing for haddock and flatfish. St. Magnus Bay, Shetland, March 2009.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Crewman on a North Sea trawler holding a 25kg hevay ling (Molva molva).

Philip Stephen / Norwegian guard vessel "Stril Tender" in heavy weather. North Sea, April 2009.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Oil drilling rig "John Shaw", situated at the Don oilfield 240 miles North East of Aberdeen, in heavy seas. North Sea, 2009.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Crewman on a North Sea trawler holding a 25kg ling (Molva molva). Model released.

Philip Stephen / Oil rig "Northern Producer" in a force 9 gale. North Sea, March 2009.

Philip Stephen / Local Shetland fishing vessel heading to shore for a fish auction in Lerwick. March 2009.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Crewman on a North Sea trawler holding a 25kg ling (Molva molva).

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Muckle Flugga lighthouse, the UK's most northerly landfall. Unst island, Shetland Islands, Scotland, UK, March 2009.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Muckle Flugga lighthouse, the UK's most northerly landfall. Unst island, Shetland Islands, Scotland, UK, March 2009.

Philip Stephen / Oil rig "Northern Producer" in stormy conditions. North Sea, March 2009.

Philip Stephen / MFV at sunrise. North Sea, 2009. Property released.

Philip Stephen / Oil rig supply vessel "Highland Citadel" approaching Peterhead Harbour, Scotland, with another ship in the background. September 2008.

Philip Stephen / Oil rig supply vessel "Highland Citadel" approaching Peterhead Harbour, Scotland. September 2008.

Philip Stephen / MFV coming alongside partner vessel to start pair trawling operations. North Sea, 2008. Property released.

Philip Stephen / Wick registered fishing vessel "Opportune" using the seine net method of fishing for haddock and flatfish, surrounded by seagulls. St. Magnus Bay, Shetland, March 2009.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Oil rig "Northern Producer" in a force 9 gale. North Sea, March 2009.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Fishing vessel in heavy seas, North Sea, April 2009. Property released.

Philip Stephen / Oil rig "Northern Producer" in a force 9 gale. North Sea, March 2009.

Philip Stephen / Crewman on a North Sea trawler holding a 25kg ling (Molva molva). Model released.