I love the sea but it does not love me. The sea is like a desert in that it is quite rightly feared. The sea and the desert are both hungry, they have things to be getting on with so you do not go into them lightly.

The health of our seas determines the future of humanity.

People can make symbolic gestures but doesn't mean their life changes. One philanthropic moment doesn't make a life of renewal; of change.

When you're surfing you're not thinking about where you parked the car or what you're going to do when you grow up or what you're going to buy when you've got lots of money. You know, you're just there. You're in the moment. And I think in a contemporary world, that's a rare privilege.

I don't think it's people's utterances that limit the writing. It's the activity itself. It's actually pretty hard to convey to someone who's not a surfer. The sensation is the thing. And it's tough to describe without resorting to clichés or mystical nonsense.

Australia was once a leader in taking global warming seriously. The former PM [Kevin Rudd] called it 'greatest moral challenge of our time'. But in the past couple of years the national consensus has been eroded and Australians are being encouraged by the polluters and their mates in Parliament to forget it was ever mentioned. It's heartbreaking.

Yet however comforting and peaceful beach-combing is, it ends up like the sea, as disturbing as it is reassuring. In dark moments I believe that walking on a beach at low tide is to be looking for death, or at least anticipating it. You will only find the dead, the spilled and the cast-off. Things torn free of their life or their place.