A young boy waits behind a chain fence to board a Sydney Harbour ferry Shadowy A common Australian crow butterfly

A common Australian crow butterfly on a shadowy leaf

Researchers add preserving solution to a fungi sample for DNA analysis Waratah

Lush tropical rainforest on a limestone island in turquoise seas

A bright red steering wheel at the rear of a tugboat for stern control Darwin Waterfront

A close-view animal portrait of a Brolga bird (Grus rubicundus)

A young boy waits behind a chain fence to board a Sydney Harbour ferry Shadowy A common Australian crow butterflyA young boy waits behind a chain fence to board a Sydney Harbour ferry Sydney Harbour, Sydney Cove, Warrane, Port Jackson, Circular Quay, Sydney, New South Wales, Australia.