'It is a drowsy Saturday morning and I’m out early, walking between road and fences, through human-oriented suburbs, to the mangroves at Lime Kiln Bay on the Georges River in Sydney’s southern suburbs. As I enter the mangroves along the boardwalk here, I move into a darker world, one of twisted trees, diffuse light and the strange scuttling of crabs. Settling my attention into the mangroves, the sounds of joggers and dog walkers fade, along with the expectations of a world divided into solid land and fluid water. I become alert to mangrove movements, mangrove light. What matters changes. I realise I want to know how high the tide is and which way it is moving.' (Introduction)