One of Prime Minister Tony Abbott's MPs has lashed green groups, including Greenpeace, as "terrorists" and in a bizarre speech to Parliament has declared radical green groups as the greatest terror threat to North Queensland.

Nationals MP George Christensen is fighting activists whom he calls "gutless green grubs" opposed to the expansion of the Abbot Point coal terminal in his electorate. In his speech to Parliament, the outspoken MP said "the greatest terrorism threat in North Queensland, I'm sad to say, comes from the extreme green movement".

Nationals MP George Christensen

Labor's justice spokesman David Feeney rounded on the MP, calling him an "idiot" and demanded he apologise for his "infantile, outrageous and insensitive" comments made after last week's anti-terrorism raids and this week's fatal shooting of a "known terror suspect".

Mr Christensen says groups oppose the expansion and associated jobs out of ideology and not to save the Great Barrier Reef, because they are still campaigning against the proposal, even though an onshore dumping proposal has been found.