"An environmental group is stepping up its campaign against the harvesting of timber from a coupe in north-west Tasmania because of the presence of a giant freshwater crayfish population.
This week a group from the Bob Brown Foundation has been monitoring the population in the Frankland River, located in the Tarkine Wilderness Area in north-west Tasmania.
The river is within 400,000 hectares of reserve land that the State Government plans to open up for logging.
Bob Brown Foundation campaigner Scott Jordan said it would threaten the crayfish population.
"We've found some spectacular giant freshwater crayfish, some strong blues and colours that are really unique to the Frankland catchment," he said."