Blue Snakes!

I had not seen the bllue phases of either of these snakes. This is really cool... I GUESS Demansia could be considered turquoise, thats a shade of blue(ish).

Australian or Common Tree Snake (Dendrelaphis punctulatus), family Colubridae, found in coastal regions in northern and eastern Australia

photographs: Gary Bell, Pierson Hill, & Stewart Macdonald

Desert Whip Snake (Demansia cyanochasma), family Elapidae, found in arid regions of Australia

Venomous.

Described in 2023.

(Demansia papuensis) Greater black whipsnake

Lesser Black Whipsnake (Demansia vestigiata), family Elapidae, North Queensland, Australia

Venomous.

Yellow-faced Whip Snake - Demansia psammophis

Also referred to as Collared Whip Snake, Demansia psammophis (Elapidae) is a venomous snake endemic to Australia, widespread over most of mainland Australia, and is absent only from the central northern region.

The Yellow-faced Whip Snake is diurnal, fast and alert, and also is  potentially dangerous and should be treated with caution. Its venom is not well known, but mildly coagulant factors may cause a painful bite and sometimes localized numbing of a hand or limb. This snake is apparently reluctant to bite but potentially dangerous to humans. 

References: [1] - [2] - [3] - [4]