Etienne Littlefair / Northern long-neck turtle (Chelodina rugosa) in a small Adelaide River tributary at night, Northern Territory, Australia. May.

Etienne Littlefair / Northern long-neck turtle (Chelodina rugosa) in a small Adelaide River tributary at night, Northern Territory, Australia. December.

Etienne Littlefair / Northern long-neck turtle (Chelodina rugosa) in a small Adelaide River tributary at night, Northern Territory, Australia. August.

Etienne Littlefair / Northern long-neck turtle (Chelodina rugosa) in a small Adelaide River tributary at night, Northern Territory, Australia. April.

Etienne Littlefair / Sandstone long-necked turtle (Chelodina burrungandjii) actively foraging at night, Manning River, Western Australia, 20/06/2018.

Etienne Littlefair / Looking up at Irwin's turtle (Elseya irwini), large adult female found on the surface, possibly breathing or warming up, North Johnstone River near Malanda, Australia. August.

Etienne Littlefair / Fitzroy river turtle (Rheodytes leukops), adult resting, Connors River, Queensland, Australia. August.

Etienne Littlefair / Northern red-faced turtle (Emydura victoriae) about to wedge itself under a rock as an escape mechanism upon sensing a threat, Manning River, Western Australia. June.

Etienne Littlefair / Northern snapping turtle (Elseya dentata) swimming away in mid-water column, Daly region, Northern Territory, Australia. June.

Etienne Littlefair / Northern snapping turtle (Elseya dentata) swimming, possibly surfacing for air, Daly region, Northern Territory, Australia. June..

Etienne Littlefair / Northern snapping turtles (Elseya dentata), resting in an underwater cave shared with other northern snapping turtles, Katherine region, Northern Territory, Australia. July.

Etienne Littlefair / Northern snapping turtle (Elseya dentata), resting in an underwater cave shared with other northern snapping turtles and Sooty grunters Katherine region, Northern Territory, Australia. July.

Etienne Littlefair / Northern snapping turtle (Elseya dentata) walking along the bottom of a deep, sandy creek, Daly region, Northern Territory,July

Etienne Littlefair / Northern snapping turtle (Elseya dentata) walking along the bottom of a deep, rocky creek, Katherine region, Northern Territory, June

Etienne Littlefair / Northern snapping turtle (Elseya dentata) about to surface for air, Katherine region, Northern Territory, June

Etienne Littlefair / White-throated snapping turtle (Elseya albagula), adult female walking along the bottom of a rocky area in the Connors River, Queensland, Australia.

Etienne Littlefair / Northern long-neck turtle (Chelodina rugosa) slowly emerging from hiding in rocks and debris in a small Adelaide River tributary, showing typical daytime wariness of the species, Northern Territory, A...

Etienne Littlefair / Rear view of a Northern long-neck turtle (Chelodina rugosa) swimming away in a small Adelaide River tributary at night, Northern Territory, Australia. May. Cropped image.

Etienne Littlefair / Yellow-bellied snapping turtle (Elseya flaviventralis) swimming along rock wall, Arnhem Escarpment Creek, Northern Territory, Australia. June.

Etienne Littlefair / Yellow bellied snapping turtle (Elseya flaviventralis) about to surface for air, Arnhem Escarpment Creek, Northern Territory, Australia. June.

Etienne Littlefair / Northern snapping turtles (Elseya dentata), small adult at rest amongst woody debris at the bottom of a deep creek bed in the Daly region, Northern Territory, Australia. June. Cropped.

Etienne Littlefair / Northern snapping turtle (Elseya dentata), a large adult female coming to rest on a deep creek bed, Daly region, Northern Territory, Australia. July.

Etienne Littlefair / White-throated snapping turtle (Elseya albagula), adult female with cataracts, found active, walking along the bottom of a rocky area in the Connors River, Queensland, Australia. August.

Etienne Littlefair / White-throated snapping turtle (Elseya albagula), large adult female with cataracts, found active, walking along the bottom of a deep pool in the upstream of the Mary River, Queensland, Australia. Aug...

Etienne Littlefair / Broad-shelled turtle (Chelodina expansa), adult actively moving along deep river bed, possibly foraging, Mary River, Queensland, Australia. July. Cropped.

Etienne Littlefair / Sandstone long-necked turtle (Chelodina burrungandjii) actively foraging at night, Pentecost River tributary, Western Australia. April.

Etienne Littlefair / Arnhem long-necked turtle (Chelodina burrungandjii) swimming at night, Arnhem Escarpment Creek, Northern Territory, Australia. April.

Etienne Littlefair / Fitzroy river turtle (Rheodytes leukops), adult resting under woody debris, Connors River, Queensland, Australia. August. Cropped.

Etienne Littlefair / Fitzroy river turtle (Rheodytes leukops), adult actively moving along the riverbed, Connors River, Queensland, Australia. August.

Etienne Littlefair / Fitzroy river turtle (Rheodytes leukops), adult actively moving along the riverbed, Connors River, Queensland, Australia. August. Cropped.

Etienne Littlefair / Fitzroy river turtle (Rheodytes leukops), adult actively moving along the rocky riverbed, Connors River, Queensland, Australia. August.

Etienne Littlefair / Saw-shelled turtle (Myuchelys latisternum) resting, Arnhem escarpment creek, Northern Territory, Australia. May.

Etienne Littlefair / Northern snapping turlte (Elseya dentata) about to surface for air, Katherine region, Northern Territory, Australia. June.

Etienne Littlefair / Northern red-faced turtle (Emydura victoriae) young juvenile swimming amongst submerged pandanus, Manning River, Western Australia, June. Cropped.

Etienne Littlefair / Northern red-faced turtle (Emydura victoriae) emerging from vegetation, Manning River, Western Australia. June.

Etienne Littlefair / Northern yellow-faced turtle (Emydura tanybaraga), young juvenile resting in a sheltered spot in a shallow stretch of Berry Creek, Northern Territory, Australia. Cropped.

Etienne Littlefair / Northern yellow-faced turtle (Emydura tanybaraga), adult male scared off by seeing the photographer approaching. Berry Creek, Northern Territory, Australia. May.

Etienne Littlefair / Worrell's turtle (Emydura subglobosa worrelli), large adult female resting at night, Lawn Hill Creek, Queensland, Australia. January.

Etienne Littlefair / Worrell's turtle (Emydura subglobosa worrelli), adult swimming through the darkness underneath a large overhanging creek bank, Katherine Region, Northern Territory, Australia. December.

Etienne Littlefair / Worrell's turtle (Emydura subglobosa worrelli), adult resting under aquatic vegetation, Katherine Region, Northern Territory, Australia. December.

Etienne Littlefair / Worrell's turtle (Emydura subglobosa worrelli), adult swimming through the darkness underneath a large overhanging creek bank, Katherine region, Northern Territory, Australia. December.

Etienne Littlefair / Mary river turtle (Elusor macrurus), full-sized adult male with alge-covered carapace heading for shelter under a fallen log, Mary River, Queensland, Australia. August.

Etienne Littlefair / Mary river turtle (Elusor macrurus), adult male swimming after becoming aware of the photographer, Mary River, Queensland, Australia. August.

Etienne Littlefair / Mary river turtle (Elusor macrurus), full-sized adult male walking along deep riverbed, Mary River, Queensland, Australia. August. Cropped.

Etienne Littlefair / Mary river turtle (Elusor macrurus), adult male walking along riverbed, with algae attached to his head, Mary River, Queensland, Australia. August. Cropped.

Etienne Littlefair / Mary river turtle (Elusor macrurus), juvenile resting, well-camouflaged, Mary River inland of Cambroon, Queensland, Australia. August.

Etienne Littlefair / Krefft's river turtle (Emydura macquarii krefftii), juvenile with carapace covered in algae, actively moving along riverbed of the Mary River, Queensland, Australia. August.

Etienne Littlefair / Krefft's river turtle (Emydura macquarii krefftii), adult actively moving along riverbed of the Mary River, Queensland, Australia. Cropped.