Looking into the water while working on his family's crayfishing boat, Andrew Basile noticed how quickly damaged coral regrew at the Abrolhos Islands off the West Australian coast.
"You'd see where a pot had been on the reef and there was a couple of scratches and marks … and then you go back for the following lobster season and everything would be nice and neat and clean, and you'd think, 'Hmmm'," he said.