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...

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