The common tree snake (Dendrelaphis punctulata), also called green tree snake and Australian tree snake is a slender, large-eyed, non-venomous, diurnal snake of many parts of Australia, especially in the northern and eastern coastal areas. This common snake is harmless, readily recognized as it is an agile snake with a very slender body and tail. The body color varies from green to olive-green to black, sometimes even blue.
The rain serpent is a common motif in Aboriginal artworks. When a rainbow is sighted in the sky, it is said that the serpent is moving from one waterhole to another. For this reason, some waterholes get never dried.