David Pattyn / Great crested grebe (Podiceps cristatus) stretching its wings. The Netherlands. June 2014

Bristol City Museum / Queen Alexandra's birdwing butterfly {Ornithoptera alexandrae} museum specimens, male top, female below. World's largest butterfly, wing span 1 foot / 30 cms. Endangered species occurs in Papua New Gu...

Remi Masson / Giant cave spider (Heteropoda sp.) Sulawesi, Indonesia. One of the worlds largest spider with a leg span of 25 cm

Ashley Cooper / Blackfriars Bridge across the River Thames in London, UK, is the world's largest solar bridge. Its parapet contains over 4400 solar photo voltaic panels, generating 50% of the stations electricity nee...

Ashley Cooper / Blackfriars Bridge across the River Thames in London, UK, is the world's largest solar bridge. Its parapet contains over 4400 solar photo voltaic panels, generating 50% of the stations electricity nee...

David Fleetham / Japanese spider crab (Macrocheira kaempferi) the largest arthropod in the world in terms of leg span, reaching over 12 feet and weighing up to 41 pounds, Japan.

Eric Baccega / African darter (Anhinga rufa) drying its wings on mangrove tree. Baringo Lake. Kenya.

Paul Hobson / Buzzard (Buteo buteo) fighting in snow, Poland, January.

Paul Hobson / Buzzard (Buteo buteo) fighting in snow, Poland, January.

Will Burrard-Lucas / Martial eagle (Polemaetus bellicosus) soaring with open wings. Liuwa Plain National Park, Zambia. November

Neil Aldridge / Black-shouldered kite (Elanus caeruleus) hunting over grassland, Marievale Bird Sanctuary, Gauteng Province, South Africa.

George Sanker / Great egret (Ardea alba) taking off with frog prey in mouth, Myakka River State Park, Florida, USA, March

Konrad Wothe / Turkey vulture (Cathartes aura) with wings outstreched in palm tree, Panguana Reserve, Huanuco province, Amazon basin, Peru.

Ole Jorgen Liodden / Bounty shag (Phalacrocorax ranfurlyi) stretching wings on water, near Bounty Island, Sub-Antarctic New Zealand, March. Vulnerable species.

Aflo / Australian white ibis (Threskiornis moluccus) in flight, Australia.

Andy Rouse / Herring gull (Larus argentatus) taking off from water. Norway.

Paul Hobson / Buzzard (Buteo buteo) fighting in snow, Poland, January.

Nick Garbutt / Colombian Purple Bloom Tarantula (Xenesthis immanis) with human hand for scale (leg span 22-23cm). Paujil Nature Reserve, Magdalena Valley, Colombia, South America.

David Tipling / Arctic Tern (Sterna paraidsea) in flight at at breeding colony in front of Sullom Boe Oil terminal, Shetland, Scotland, UK.

Peter Lewis / Saxtead windmill, built in 1706 it stands 46 feet high and carries sails with a span of almost 55ft. Sufolk, England. June 2009

Barry Mansell / Paper kite / Large tree nymph butterfly (Idea leuconoe) 6" wing span, captive, from Thailand to Malaysia,

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) eight kilograms with four foot arm span, squeezing out though a hole 50 millimeters x 100 millimeters, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) eight kilograms with four foot arm span, squeezing, out through a hole 50 millimeters x 100 millimeters, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) eight kilograms with four foot arm span, squeezing out though a hole 50 millimeters x 100 millimeters, Quadra Island, British Columbia, Canada

Fred Bavendam / Pacific Giant Octopus (Enteroctopus dofleini) eight kilograms with four foot arm span, squeezing out though a hole 50 millimeters x 100 millimeters, Quadra Island, British Columbia, Canada

Piotr Naskrecki / Coconut Crab (Birgus latro) the largest living terrestrial invertebrate, can reach a weight of nine pounds and a leg span of over three feet, Guadalcanal, Solomon Islands

Tim Fitzharris / Wilson arch with a span of 91 feet and height of 46 feet, off of highway 191, made of entrada sandstone, Utah

Tim Fitzharris / Wilson arch with a span of 91 feet and height of 46 feet, off of highway 191, made of entrada sandstone, Utah

Tim Fitzharris / Wilson arch with a span of 91 feet and height of 46 feet, off of highway 191, made of entrada sandstone, Utah

Tim Fitzharris / Wilson Arch with a span of 91 feet and height of 46 feet, off of highway 191, made of entrada sandstone, Utah

Tui De Roy / Chatham Albatross (Thalassarche eremita) flying, critically endangered, The Pyramid, Chatham Islands

Tui De Roy / Flightless Cormorant (Phalacrocorax harrisi) drying stunted wings after feeding trip, Punta Espinosa, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Brown Pelican (Pelecanus occidentalis) patrolling seashore in search of fish schools, Floreana Island, Galapagos Islands, Ecuador

Tui De Roy / Brown Pelican (Pelecanus occidentalis) patrolling seashore in search of fish schools, Floreana Island, Galapagos Islands, Ecuador

Duncan Usher / Common Buzzard (Buteo buteo) landing on post, winter, Europe

Claus Meyer / Social Spider (Anelosimus eximius) web in vegetation, web may span up to 10 meters, Amazon ecosystem, Brazil

Fred Bavendam / Maori Octopus (Octopus maorum) is the largest Octopus found in Australia, can have an arm span in excess of two meters, Edithburgh, South Australia

Fred Bavendam / Maori Octopus (Octopus maorum) is the largest Octopus found in Australia, can have an arm span in excess of two meters, South Australia, Australia

Mark Moffett / Honey Bee (Apis mellifera) workers maintaining hive, complex social behavior centers on maintaining the queen for a full life span of two to three years

Doug Gimesy / Dorsal view of rescued male Yellow-bellied sheath-tail bat (Saccolaimus flaviventris), approximately aged 18 months. Melbourne, Victoria, Australia. August. Captive, taken with permission and under su...

Jack Dykinga / Burrowing owl (Athene cunicularia) young chick sprinting to meet parent arriving with food, Marana, Sonoran Desert, Arizona, USA. Chick is approximately 3 weeks out of burrow.