Chelodina colliei Oblong Turtle
Some other names for this species:
Long-necked Turtle
This species has suffered through many classifications over the years, including Chelodina oblonga, Macrochelodina kuchlingi, Chelodina siebenrocki, and several others.
Walyunga National Park, Western Australia, AustraliaNovember 8, 2005
I got a quick glimpse of this turtle as it vanished downward into the muddy bottom of the Swan River. It did not stick around for a photo session.

Here is a complete list of the reptiles and frogs I saw on this trip to Western Australia.

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