Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
According to some law regarding making movies in Australia, which I didn't bother to look up, but I know exists because of every Australian movie I've seen, filmmakers are required to show wildlife that is unique to the continent. Kangaroos, Koalas, Cockatoos, and giant lizards continually show up for no real reason other than to let you know you are down under.
In Sirens, when English Minister Hugh Grant and his English wife get off a train to visit a painter in a small rural Australian town, they see a man at a desk with a large skink on it. The wife makes a face at it, but the lizard is never mentioned or even acknowledged. We also see a Koala, a giant spider, and a Wombat in the movie.