The Federal Government has rejected Opposition criticism of its response to a large oil spill off Western Australia's north-west coast.
Oil has been leaking from an oil rig in the Timor Sea for more than two months and attempts to plug it have so far failed.
The Opposition says it is concerned about the environmental damage and says the Government is not doing enough to prevent an environmental disaster.
A spokesman for the Federal Environment Minister, Peter Garrett, says the Government has had monitoring teams on site from the beginning and has put in place long-term monitoring plans.
The company responsible for the oil rig says it will make another attempt at plugging the leak tomorrow.