The father of the late crocodile hunter Steve Irwin is the face of a multi-million dollar advertising campaign to save the Great Barrier Reef from industry.
Bob Irwin launched the three-week campaign, which includes TV, radio, online and newspaper advertisements, on Sunday.
The ads take a swipe at the Queensland government for "fast-tracking" port and industrial developments along the reef's coast.
Mr Irwin warns in the television ad that people if they don't act now, the reef "will be ruined."
"It's your reef, but you're going to have to fight for it", he said.