Photographer and film-maker Simon Mustoe has been studying and observing wildlife in his native Australia for nearly 50 years - in this series he profiles environmental and wildlife specialists and enthusiasts across Australia
Lyn Harwood is both an explorer and caretaker of the Australian bush, she has a fascination with wild orchids which she photographs, catalogues and studies
Marine Scientist Dave Donnelly is fascinated by Humpbacks Whales and has been studying them most of his life