Juergen Freund / Scientists studying response to wet-dry seasonal transition in rainforest trees, in basket lifted by crane. Daintree rainforest observatory, Queensland, Australia. February 2015

Juergen Freund / Scientists studying response to wet-dry seasonal transition in rainforest trees, in basket lifted by crane. Daintree rainforest observatory, Queensland, Australia. February 2015

Juergen Freund / Scientists studying response to wet-dry seasonal transition in rainforest trees, in basket lifted by crane. Daintree rainforest observatory, Queensland, Australia. February 2015

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in seasonal pond, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in seasonal pond, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in seasonal pond, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Jack Dykinga / Life returning after seasonal rains to burnt forest, Apache-Sitgreaves National Forest devastation of the 'Wallow Fire', Arizona, USA August 2011

Inaki Relanzon / Trashumancia / seasonal migration, large herd of moving livestock, French Pryrenees, Spain, June 2011.

Thomas Rabeil / Flock of Marabou Stork (Leptoptilos crumeniferus) taking flight at seasonal waterhole, seen from above. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Nature Production / Aerial view of rice paddy fields (Oryza sativa) fixed-point observation of seasonal changes, ploughed fields in early winter, Shiga, Japan, November, sequence 7/8

Nature Production / Aerial view of rice paddy fields (Oryza sativa) fixed-point observation of seasonal changes, summer, Shiga, Japan, early August, sequence 4/8

Petra Wegner / Cairn Terrier, portrait lying in autumn foliage, aged 14 years

David Noton / Autumn colours of the Aspen trees (Populus tremula) in the snow, near Muleshoe, Bow Valley Parkway, Banff National Park, Alberta, Canada. October 2009

Sandra Bartocha / Gespensterwald (ghostly forest) - European Beech forest (Fagus sylvatica), Nienhagen, Germany.

Sandra Bartocha / Gespensterwald (ghostly forest) - European Beech forest (Fagus sylvatica) in snow, Nienhagen, Germany. RUNNER-UP: Creative Visions of Nature - Wildlife Photographer of the Year 2010

Nick Upton / Autumn leaves falling from trees, Marburg, Hesse, Germany, October.

Stephen Dalton / Maple (Acer sp) leaves in autumn

Doug Perrine / Female Bull sharks (Carcharhinus leucas) in seasonal breeding aggregation with Sharksuckers (Echeneis naucrates) Playa del Carmen, Cancun, Quintana Roo, Yucatan Peninsula, Mexico (Caribbean Sea)

Stephen Dalton / European beech trees (Fagus sylvatica) falling in autumn, UK

Wild Wonders of Europe / Hermansen / Unique groundwater fed seasonal turlough lake, Burren National Park, County Clare, Republic of Ireland, June 2009

Wild Wonders of Europe / Hermansen / Turlough lake (temporary / seasonal ground water lake) Burren National Park, County Clare, Republic of Ireland, June 2009

Jack Dykinga / Sunlit cliffs of Closed Canyon reflected in a seasonal rainwater pool in Santana tuff rock formation, Big Bend Ranch State Park, Texas, USA

Mark Taylor / White-and-merle Border Collie-cross puppy, Ice, 14 weeks, wearing a Father Christmas hat.

Doug Wechsler / Eastern mud turtle in seasonal pond {Kinosternon subrubrum} Blackbird St Forest, Delaware, USA

Tui De Roy / Galapagos Giant Tortoise (Chelonoidis nigra) group wallowing in seasonal pool on caldera rim, Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Giant Tortoise (Chelonoidis nigra) group wallowing in seasonal pond on caldera rim, Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Doug Perrine / Copper shark / Bronze whaler {Carcharhinus brachyurus} predating sardine baitball, Transkei coast, South Africa. (Non-ex).

Doug Perrine / Copper sharks / Bronze whalers {Carcharhinus brachyurus} predating sardine baitball, (Non-ex).

Doug Perrine / Copper shark / Bronze whaler {Carcharhinus brachyurus} & S. African fur seal predating (Non-ex).

Anup Shah / Savanna with Acacia trees, and line of trees marking seasonal water course. Masai Mara, Kenya East-Africa. End of dry season

Martin Gabriel / Peak of Spitzkoppe reflected in ephemeral pool, wet season. Damaraland, Namibia

Juergen Freund / Dr. Raymond Dempsey studying response to wet-dry seasonal transition in rainforest trees, in basket lifted by crane. Daintree rainforest observatory, Queensland, Australia. February 2015

Juergen Freund / Dr. Raymond Dempsey in crane studying response to wet-dry seasonal transition in rainforest trees, Daintree rainforest observatory, Queensland, Australia. February 2015

Juergen Freund / Dr. Raymond Dempsey studying response to wet-dry seasonal transition in rainforest trees, in basket lifted by crane. Daintree rainforest observatory, Queensland, Australia. February 2015

Juergen Freund / Dr. Raymond Dempsey studying response to wet-dry seasonal transition in rainforest trees, in basket lifted by crane. Daintree rainforest observatory, Queensland, Australia. February 2015

Juergen Freund / Dr. Raymond Dempsey studying response to wet-dry seasonal transition in rainforest trees, in basket lifted by crane. Daintree rainforest observatory, Queensland, Australia. February 2015

Juergen Freund / Dr. Raymond Dempsey studying response to wet-dry seasonal transition in rainforest trees, in basket lifted by crane. Daintree rainforest observatory, Queensland, Australia. February 2015

Juergen Freund / Scientist Dr Raymond Dempsey researching rainforest treess response to wet-dry seasonal transition from special research crane. Daintree Rainforest Observatory, Queensland, Australia. February 2015

Juergen Freund / Scientist Dr Raymond Dempsey researching rainforest treess response to wet-dry seasonal transition from special research crane. Daintree Rainforest Observatory, Queensland, Australia. February 2015

Juergen Freund / Scientist Dr Raymond Dempsey researching rainforest treess response to wet-dry seasonal transition from special research crane. Daintree Rainforest Observatory, Queensland, Australia. February 2015

Ashley Cooper / Temperature inversion created clouds in Ambleside in the Lake District, UK, October 2004.

Ashley Cooper / Red Gum trees are iconic Australian trees that grow along the banks of the Murray River. They rely on a regular flood cycle to survive. The unprecedented drought of the last 15 years has lead to low r...

Ashley Cooper / Christmas decorations on a house in Clitheroe, Lancashire, England, UK, December 2005.

Ashley Cooper / Highland cattle, with snowfall, Kirkstone Pass, Lake District, England, UK, December 2008.

Solvin Zankl / Firefly squid (Watasenia scintillans) a bioluminescent species which is commercially fished and eaten as a seasonal delicacy. Namerikawa, Japan, May.

Solvin Zankl / Firefly squid (Watasenia scintillans) a bioluminescent species which is commercially fished, packaged and sold to be eaten as a seasonal delicacy. Namerikawa, Japan, May.

Jen Guyton / Bushpig (Potamochoerus larvatus) foraging for water lettuce (Pistia sp.) in a seasonal pond, Gorongosa National Park, Mozambique.

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in seasonal pond, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in seasonal pond, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in seasonal pond during rainfall, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in seasonal pond, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in seasonal pond, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in seasonal pond, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in seasonal pond, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in seasonal pond, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Yva Momatiuk & John Eastcott / Cracked mud and bones in seasonal stream bed, Los Glaciares National Park, Patagonia, Argentina

Tui De Roy / Erect-crested penguins (Eudyptes sclateri) seasonal moulting. Antipodes Island, New Zealand Sub-Antarctic Islands. Endemic to Antipodes and Bounty Islands. Endangered species.

Tui De Roy / Erect-crested penguins (Eudyptes sclateri) seasonal moulting. Antipodes Island, New Zealand Sub-Antarctic Islands. Endemic to Antipodes and Bounty Islands. Endangered species.

Tui De Roy / Erect-crested penguins (Eudyptes sclateri) feathers left behind after seasonal moulting. Antipodes Island, New Zealand Sub-Antarctic Islands. Endemic to Antipodes and Bounty Islands. Endangered specie...

Tui De Roy / Erect-crested penguins (Eudyptes sclateri) feathers left behind after seasonal moulting. Antipodes Island, New Zealand Sub-Antarctic Islands. Endemic to Antipodes and Bounty Islands. Endangered specie...

Tui De Roy / Small tree finch (Camarhynchus parvulus) feeding on seasonal Erythrina flowers Galapagos

Jen Guyton / African sharptooth catfish (Clarias gariepinus) in mud in the dry season. These fish can breath air, helping them survive in drying ponds in this highly seasonal ecosystem. Gorongosa National Park, Mo...

Jen Guyton / African sharptooth catfish (Clarias gariepinus) in mud in the dry season. These fish can breath air, helping them survive in drying ponds in this highly seasonal ecosystem. Gorongosa National Park, Mo...

Jen Guyton / African sharptooth catfish (Clarias gariepinus) in mud in the dry season. These fish can breath air, helping them survive in drying ponds in this highly seasonal ecosystem. Gorongosa National Park, Mo...

Jen Guyton / African sharptooth catfish (Clarias gariepinus) in mud in the dry season. These fish can breath air, helping them survive in drying ponds in this highly seasonal ecosystem. Gorongosa National Park, Mo...

Jen Guyton / African bullfrog (Pyxicephalus edulis) male calling for mate in newly formed seasonal pond, Gorongosa National Park, Mozambique

Jen Guyton / East African black mud turtle (Pelusios subniger) in seasonal pond. Gorongosa National Park, Mozambique.

Jen Guyton / East African black mud turtle (Pelusios subniger) in seasonal pond. Gorongosa National Park, Mozambique.

Jen Guyton / East African black mud turtle (Pelusios subniger) in seasonal pond. Gorongosa National Park, Mozambique.

Jen Guyton / East African black mud turtle (Pelusios subniger) in seasonal pond. Gorongosa National Park, Mozambique.

Jen Guyton / East African black mud turtle (Pelusios subniger) in seasonal pond. Gorongosa National Park, Mozambique.

Jen Guyton / East African black mud turtle (Pelusios subniger) in seasonal pond. Gorongosa National Park, Mozambique.

Jen Guyton / East African black mud turtle (Pelusios subniger) in seasonal pond. Gorongosa National Park, Mozambique. Cropped image

Jen Guyton / East African black mud turtle (Pelusios subniger) in seasonal pond. Gorongosa National Park, Mozambique. Cropped image

Jen Guyton / East African black mud turtle (Pelusios subniger) in seasonal pond. Gorongosa National Park, Mozambique. Cropped image

Jen Guyton / East African black mud turtle (Pelusios subniger) in seasonal pond. Gorongosa National Park, Mozambique. Cropped image

Jen Guyton / East African black mud turtle (Pelusios subniger) in seasonal pond. Gorongosa National Park, Mozambique. Cropped image

Jen Guyton / Ground pangolin (Smutsia temminckii) walking in front of a seasonal pond in Gorongosa National Park, Mozambique. Taken shortly after it was released back into the wild.

Jen Guyton / Swamp viper (Proatheris superciliaris) rests near a seasonal pond, Gorongosa National Park, Mozambique.

Jen Guyton / Swamp viper (Proatheris superciliaris) rests near a seasonal pond, Gorongosa National Park, Mozambique.

Gerrit Vyn / Sandhill crane (Grus canadensis) incubating a nest in a seasonal wetland. Sublette County, Wyoming, USA. May..

Gerrit Vyn / Sandhill crane (Grus canadensis) incubating a nest in a seasonal wetland. Sublette County, Wyoming, USA. May..

Gerrit Vyn / Sandhill crane (Grus canadensis) incubating a nest in a seasonal wetland. Sublette County, Wyoming, USA. May..

Tui De Roy / Adelie penguin (Pygoscelis adeliae) walking across seasonal sea ice, passing frozen-in iceberg, near Davis Station, Prydz Bay, East Antarctica, November.

Steve O. Taylor (GHF) / Interior of a seasonal hut, Mauritania, 2004.

Tui De Roy / Small Tree-Finch (Camarhynchus parvulus) feeding on seasonal flowers, Santa Cruz Island, Ecuador

Bert Willaert / Seasonal waterfall during the monsoon. Koyna, India. Western Ghats

Bert Willaert / Seasonal waterfalls during the monsoon. Koyna, Western Ghats, India, August 2010.

Mark Moffett / Seasonal creek meandering among mountain ridges, Hajhir Mountains, Socotra, Yemen

Staffan Widstrand / Seasonal marshlands which had dried up, Pulicat Lake, Tamil Nadu, India, January 2013.

Staffan Widstrand / Seasonal marshlands near Pulicat Lake, Tamil Nadu, India, January 2013.

Pat Tuson / Farm Direct notice board on the pavement, advertising the sale of local foods from their shop, Highbury, London Borough of Islington, England UK

Colin Varndell / Robin (Erithacus rubecula) in snow. Dorset, UK, January 2010.

Philippe Clement / Colourful cabins of oyster farmers in the harbour at Le Chateau-d'Oleron on the island Ile d'Oleron, Charente-Maritime, France, September 2012

Bryan and Cherry Alexander / Lena Kuboleva, a young Selkup woman, cleans fish while her niece Anastasia watches, at a summer camp in the forest, Krasnoselkup, Yamal, Western Siberia, Russia

Bryan and Cherry Alexander / Lena Kuboleva, a young Selkup woman, with her daughter Violetta, inside a 'Poymot', (traditional Selkup turf winter hut), at a winter hunting camp in the forest near Ratta, Krasnoselkup, Yamal, Wester...