Political parties at an election forum in north Queensland have clashed over what they see as the biggest threat to the Great Barrier Reef.
The North Queensland Conservation Council (NQCC) organised the forum which gave voters from the the chance to grill local candidates on environmental policies.
The future of the Barrier Reef dominated voters' questions.
Greens candidate Gail Hamilton told the forum dredging poses one of the biggest threats.
"The Greens oppose any offshore spoil disposal," she said.
However minor parties, including Rise Up Australian Party's Nino Marolla, say the reef is resilient and will recover from any damage.
"We've known that over the years the reef has died and reproduced itself," he said.
Incumbent LNP Member Ewan Jones told the forum that run-off, rather than dredging spoil, poses the biggest threat to the reef.
"That's where your blooms of crown of thorn starfish come from," he said.
Labor candidate Cathy O'Toole stopped short of saying what her party believed to be the reef's biggest threat but said she opposes the proposed expansion of the Townsville Port.
"It is absolutely, definitely my preference this does not happen," she said.
Voters also quizzed candidates on their position of coal mining and renewable energy, solar energy and fossil fuel production.