Steven David Miller / Emu (Dromaius novaehollandiae) juvenile with beak open to catch a leaf, Cleland Wildlife Park, South Australia, March. Captive.

Steven David Miller / Silhouette of an Agile wallaby (Macropus agilis) hopping along the beach at dusk, Cape Hillsborough National Park, Queensland, Australia. September.

Steven David Miller / Sand bubble patterns created by Sand bubbler crabs (Scopimera inflata), Cape Hillsborough National Park, Queensland, Australia. September.

Steven David Miller / Rainbow lorikeet (Trichoglossus moluccanus) on a branch, Cania Gorge National Park, Queensland, Australia. September.

Steven David Miller / A Perentie (Varanus giganteus) using its forked tongue to detect smells, Alice Springs Reptile Centre, Northern Territory, Australia, Captive. May.

Steven David Miller / An Orange lacewing butterfly (Cethosia penthesilea), Cairns Botanical Gardens, Queensland, Australia. Captive. August.

Steven David Miller / Olive-backed sunbird (Nectarinia jugularis) female returning to her nest with nesting material, Cape Hillsborough National Park, Queensland, Australia, September.

Steven David Miller / Olive-backed Sunbird (Nectarinia jugularis) female in her nest, Cape Hillsborough National Park, Queensland, Australia, September.

Steven David Miller / Long-nosed potoroo (Potorous tridactylus) feeding on bird seed fallen from bird feeders which encourages them to come out into open woodland. Fences around the property protect them from feral predato...

Steven David Miller / Emu (Dromaius novaehollandiae) juvenile, Cleland Wildlife Park, South Australia, March. Captive.

Steven David Miller / Eclectus parrot (Eclectus roratus) female perched in a tree, The Wildlife Habitat Zoo, Port Douglas, Queensland, Australia. August. Captive.

Steven David Miller / Red-collared lorikeet (Trichoglossus rubritorquis) pair examining hole in Eucalyptus as a potential nesting hollow. Katherine, Northern Territory, Australia.

Steven David Miller / Great bowerbird (Chlamydera nuchalis), male showing off treasures whilst female inspects bower. Lake Argyle, Kununurra, Western Australia.

Steven David Miller / Devils Marbles, Devils Marbles Conservation Reserve, Northern Territory, Australia, June 2010

Steven David Miller / A beach at Isthmus Bay provides some good surf waves, Isthmus Bay, Torndirrup National Park, Albany, Western Australia, December

Steven David Miller / Whistling kites (Haliastur sphenurus) two in flight, one with prey in talons, over Corroboree Billabong, Mary River, Northern Territory, Australia

Steven David Miller / Australian freshwater / Johnstone's crocodile (Crocodylus johnsoni) with fish in mouth, a scrap from a fisherman, Lake Kununurra, Western Australia, July

Steven David Miller / Australian freshwater / Johnstone's crocodile (Crocodylus johnsoni) with damaged upper jaw in shallow water waiting for a scrap from a fisherman, Lake Kununurra, Western Australia, July

Steven David Miller / Subtropical rainforest growing in a creek gully, while at higher levels a mixed forest begins. Fraser Island, Queensland, Australia

Steven David Miller / Masked lapwing / plover (Vanellus miles novaehollandiae) chick walking, Hervey Bay, Queensland, Australia

Steven David Miller / Large solar panels for generating electricity by solar power, Hermannsburg, west of Alice Springs, Northern Territory, Australia, August 2007

Steven David Miller / Emu (Dromaius novaehollandiae) walking on road through saltbush habitat, Mungo National Park, New South Wales, Australia, 2007

Steven David Miller / A rock art shelter in the northern Kimberley region features a cluster of Wandjina figures peering out from the sandstone rock surface, Northern Kimberley region and the Mitchell Plateau, Western Aust...

Steven David Miller / White-lipped / Giant tree frog (Litoria infrafrenata) on palm tree, Cairns, North Queensland, Australia

Steven David Miller / Large solar panels for generating electricity by solar power, Hermannsburg, west of Alice Springs, Northern Territory, Australia, August 2007

Steven David Miller / Bradshaw rock art / Gwion Gwion, Northern Kimberley region and the Mitchell Plateau, Western Australia

Steven David Miller / Cattle Egret {Ardea ibis} on nest with chicks, summer, Caversham Wildlife Park, Perth, Western Australia, captive

Steven David Miller / Cuban tree frog (Osteopilus septentrionalis) native of West Indies introduced into Florida, USA

Steven David Miller / The Pinnacles, remnant columns in an eroded limestone plateau, Nambung National Park, Western Australia

Steven David Miller / Australian birdwing butterfly {Ornithoptera priamus} male on flower. Captive. Australia.

Steven David Miller / Snorkler at Blue hole, head spring that feeds Ichetucknee river, Florida, USA, Model released

Steven David Miller / Blue Lake in extinct volcano crater, Mt Gambier. Supplies 36K million litres water to town below. South Australia

Steven David Miller / Bottlenose dolphin abstract {Tursiops truncatus} Shark Bay, Australia

Steven David Miller / Perentie {Varanus giganteus} Northern Territory, Australia, Alice Springs Reptile Park - largest Australian monitor lizard

Steven David Miller / Cairns birdwing butterfly (Ornithoptera euphorion) male resting on leaf. Kuranda Butterfly Sanctuary, Queensland, Australia. Captive.

Steven David Miller / Cairns birdwing butterfly (Ornithoptera euphorion) male resting on leaf. Kuranda Butterfly Sanctuary, Queensland, Australia. Captive.

Steven David Miller / Cairns birdwing butterfly (Ornithoptera euphorion) male resting on leaf. Kuranda Butterfly Sanctuary, Queensland, Australia. Captive.

Steven David Miller / Blue-winged kookaburra (Dacelo leachii) perched on branch, hunting prey below. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Black flying fox (Pteropus alecto) resting in tree within colony. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Black flying fox (Pteropus alecto) resting in tree, scratching itself. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Black flying fox (Pteropus alecto) sleeping in tree roost. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Black flying fox (Pteropus alecto) sleeping in tree roost. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Black flying fox (Pteropus alecto), two resting, hanging from tree at roost. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Australasian darter (Anhinga novaehollandiae) female drying wings after fishing in Corroboree Billabong, Mary River, Northern Territory.

Steven David Miller / Freshwater crocodile (Crocodylus johnstoni) amongst rocks. Lake Argyle, The Kimberley, Western Australia.

Steven David Miller / Stencilled handprint rock art. Baloon Cave, Carnarvon Gorge, Carnarvon National Park, Queensland. 2014.

Steven David Miller / Rock art with stencilled hands, boomerangs and animal footprints . The Art Gallery, 62m of rock with 2000 stencils, engravings and paintings. Baloon Cave, Carnarvon Gorge, Carnarvon National Park, Que...

Steven David Miller / Stencilled tool rock art in The Art Gallery, 62m of rock with 2000 stencils, engravings and paintings. Baloon Cave, Carnarvon Gorge, Carnarvon National Park, Queensland. 2014.

Steven David Miller / Handprint rock art created through spitting ochre over hands. In The Art Gallery, 62m of rock with 2000 stencils, engravings and paintings. Baloon Cave, Carnarvon Gorge, Carnarvon National Park, Queen...

Steven David Miller / Rock art with stencilled hands and boomerang. The Art Gallery, 62m of rock with 2000 stencils, engravings and paintings. Baloon Cave, Carnarvon Gorge, Carnarvon National Park, Queensland. 2014.

Steven David Miller / Rock art with stencilled hands, engravings including vulvas and some graffiti. Within The Art Gallery, 62m of rock with 2000 stencils, engravings and paintings. Baloon Cave, Carnarvon Gorge, Carnarvon...

Steven David Miller / Rock art with stencilled hands and boomerangs. The Art Gallery, 62m of rock with 2000 stencils, engravings and paintings. Baloon Cave, Carnarvon Gorge, Carnarvon National Park, Queensland. 2014.

Steven David Miller / Rock art in The Art Gallery, 62m of rock with 2000 stencils, engravings and paintings. Baloon Cave, Carnarvon Gorge, Carnarvon National Park, Queensland. 2014.

Steven David Miller / Whiptail wallaby (Macropus parryi). Carnarvon Gorge National Park, Queensland, Australia.

Steven David Miller / Barron River flanked by the oldest tropical rainforest known on earth, aerial view from Skyrail Rainforest Cableway. Barron Gorge National Park, Wet Tropics World Heritage Area. Queensland, Australia....

Steven David Miller / Barron Falls surrounded by the oldest tropical rainforest known on earth, aerial view from Skyrail Rainforest Cableway. Barron Gorge National Park, Wet Tropics World Heritage Area. Queensland, Austral...

Steven David Miller / Kings Creek and sandstone cliffs, viewed from Kings Canyon Rim walk. Watarrka National Park, Northern Territory, Australia. 2014.

Steven David Miller / People climbing up Uluru / Ayers Rock, as of 2019 climbing up the rock is no longer permitted. Uluru-kata Tjuta National Park, Northern Territory, Australia. 2014.

Steven David Miller / Mulla mulla (Ptilotus sp) at base of Uluru / Ayers Rock. Uluru-kata Tjuta National Park, Northern Territory, Australia. 2014.

Steven David Miller / Anangu rock art engravings in sandstone. Base of Uluru / Ayers Rock, Uluru-kata Tjuta National Park, Northern Territory, Australia. 2014.

Steven David Miller / Australian cattle dog running on Tallebudgera Beach, Gold Coast, Queensland, Australia.

Steven David Miller / Australian shepherd dog lying down on Tallebudgera Beach, Gold Coast, Queensland, Australia.

Steven David Miller / People and dogs on Tallebudgera Beach. Skyline of Surfers Paradise in background, Gold Coast, Queensland, Australia. 2016.

Steven David Miller / Small grass yellow butterfly (Eurema brigitta) nectaring on flower. Coffs Harbour Butterfly House, Queensland, Australia. Captive.

Steven David Miller / Short-beaked echidna (Tachyglossus aculeatus) foraging for ants and termites. Carnarvon National Park, Queensland, Australia.

Steven David Miller / Rainbow lorikeets (Trichoglossus moluccanus) pair preening each other, perched in tree. Ulladulla, New South Wales, Australia.

Steven David Miller / Rainbow lorikeet (Trichoglossus moluccanus) hanging down from tree. Ulladulla, New South Wales, Australia.

Steven David Miller / Rainbow lorikeet (Trichoglossus moluccanus) on tree trunk outside nesting hollow, food in beak to feed chicks. Lane Cove National Park, Sydney, New South Wales, Australia.

Steven David Miller / Rainbow lorikeet (Trichoglossus moluccanus) feeding chicks in nest hole. Lane Cove National Park, Sydney, New South Wales, Australia.

Steven David Miller / Rainbow lorikeet (Trichoglossus moluccanus) feeding on Bottlebrush nectar. Lane Cove National Park, Sydney, New South Wales, Australia.

Steven David Miller / Rainbow lorikeet (Trichoglossus moluccanus) feeding on Bottlebrush nectar. Lane Cove National Park, Sydney, New South Wales, Australia.

Steven David Miller / Rainbow bee-eater (Merops ornatus), three perched on branch between flight forays to catch insects. Parry Creek, Wyndham, The Kimberley, Western Australia.

Steven David Miller / Platypus (Ornithorhynchus anatinus) swimming at surface, feeding on crustaceans and worms caught underwater. In pond, Carnarvon Creek, Carnarvon National Park, Queensland, Australia.

Steven David Miller / Baoab (Adansonia gregorii) tree silhouetted at sunset. Parry Lagoons Nature Park, The Kimberley, Western Australia. 2017.

Steven David Miller / Orchard swallowtail butterfly (Papilio aegeus) male on leaf. Coffs Harbour Butterfly House, Queensland, Australia. Captive.

Steven David Miller / Orchard swallowtail butterfly (Papilio aegeus) on leaf. Coffs Harbour Butterfly House, Queensland, Australia. Captive.

Steven David Miller / Little red flying fox (Pteropus scapulatus) female and baby, hanging with feet down to defecate. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Little red flying fox (Pteropus scapulatus), two hanging from branch with suckling young. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Little red flying fox (Pteropus scapulatus) male roosting, hanging from branch. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Little red flying fox (Pteropus scapulatus), two roosting within camp. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Little red flying fox (Pteropus scapulatus), three males hanging at camp. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Little red flying fox (Pteropus scapulatus) female and suckling baby in flight, searching for place to roost. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Little red flying fox (Pteropus scapulatus) flying in search of place to roost within camp. Nitmiluk National Park, Northern Territory, Australia.

Steven David Miller / Laughing kookaburra (Dacelo novaeguineae) perched on branch, looking out for prey on ground. Lane Cove National Park, New South Wales, Australia.

Steven David Miller / Infinity pool overlooking Lake Argyle. The Kimberley, Western Australia. 2017.

Steven David Miller / Spillway diverting water during high flow event. Lake Argyle reservoir, dammed in 1971 for Ord River Irrigation Scheme. The Kimberley, Western Australia. 2017.

Steven David Miller / Spillway diverting water during high flow event. Lake Argyle reservoir, dammed in 1971 for Ord River Irrigation Scheme. The Kimberley, Western Australia. 2017.

Steven David Miller / Lake Argyle reservoir, dammed in 1971 for Ord River Irrigation Scheme. Islands in the reservoir are peaks of mountains in Carr Boyd Range. The Kimberley, Western Australia. 2017.

Steven David Miller / Lake Argyle reservoir dam wall and outflow, aerial view. Reservoir dammed in 1971 for Ord River Irrigation Scheme. The Kimberley, Western Australia. 2017.

Steven David Miller / Golden orb weaver spider (Nephila sp) pair, female tending to web, tiny male on edge of web. Mary River, Northern Territory, Australia.

Steven David Miller / Golden orb weaver spider (Nephila sp) pair, large female tending to web, small male on edge of web. Mary River, Northern Territory, Australia.

Steven David Miller / Tombstone for 200 Giant clams (Tridacna gigas) illegally harvested in and around Evans Shoal, Darwin. Northern Territory, Australia. 2017.

Steven David Miller / View of rivers flowing into Cambridge Gulf. Fiver Rivers Lookout, Wyndham, The Kimberley, Western Australia.

Steven David Miller / Saltwater crocodile (Crocodylus porosus), close up of teeth. Rainforest Station, Kuranda, Queensland, Australia. Captive.

Steven David Miller / Eastern water dragon (Intellagama lesueurii lesueurii) male basking. Lane Cove National Park, New South Wales, Australia.

Steven David Miller / Eastern water dragon (Intellagama lesueurii lesueurii) male basking. Lane Cove National Park, New South Wales, Australia.