The Submission details clearly that there is no scientific evidence that demonstrates removing aquaculture from Macquarie Harbour will ensure the future of the Maugean skate in its endemic habitat, and there is absolutely no legal justification for the Australian Government to reverse its 2012 decision on salmon farming in the harbour.


The submission also includes new scientific analysis demonstrating the minimal impact of aquaculture on oxygen levels in the natural environment for the Skate.

Salmon Tasmania CEO, Luke Martin, said it was important for the Tasmanian community to have direct and immediate access to the industry’s response.

“Tasmania’s salmon industry is highly regulated, informed by some of the best marine scientists in the world, and uses the most advanced technology available,” Mr Martin said.

“We are committed to transparency with the Tasmanian community, and releasing our submission today so anyone who is interested in aquaculture, or is genuinely concerned about the Skate, can see the facts for themselves, and can have confidence that our industry’s presence in Macquarie Harbour is not a critical threat to this endangered species.

“We are confident our industry not only has a long-term future in Macquarie Harbour, but our industry’s presence on the West Coast means we can have a genuinely positive impact and invest in the effort to secure the Skate.


Mr Martin said the submission injected balance and factual information into an increasingly misleading public debate.

“There is no doubt activist groups have cherry-picked conservation reports in their vexatious pursuit of lawfare through the EPBC legislation, purely to attack the reputation of our industry.

‘This campaign is causing tremendous uncertainty and stress for the residents of Strahan and the broader community of the North-West Coast, and it must now stop.


Mr Martin said the industry submission demonstrated how compliance with a robust and independent regulatory framework has significantly changed the industry’s scale and impact within the harbour compared to 2012.

“Indeed, the decision made in 2012 that is now being reviewed by Minister Plibersek was to expand the industry from around 10,000 tons of production at the time to over 20,000 tons per annum. This expansion was completely reversed, and production is now capped at no more than 9,500 tons in the Harbour.

“In 2012 there was no independent EPA regulating the harbour. Today there is.

‘The innovation and investment of the industry to reduce its nitrogen levels has dramatically advanced over the past decade.

“Put simply, the industry has changed significantly since 2012, and is being regulated and managed effectively for the harbour.

“The industry has always taken its role in the harbour very seriously, and we have looked closely at the impact we are having on dissolved oxygen levels in the harbour and opportunities to further strengthen our sustainability practices.

“Much of the research informing the sharpened focus on the Maugean Skate was initiated and funded by the salmon aquaculture industry.

“We have now committed to an unprecedented $7 million oxygenation project beginning in the harbour this month, offsetting the oxygen drawdown of our aquaculture.

‘This is not just about offsetting our impact, but proving the effectiveness of this technology in the unique Macquarie Harbour system as a potential strategy to stimulate oxygen levels in warming weathers and to offset other industrial and natural influences.


Mr Martin said the submission also included new and critical analysis into aquaculture’s impact on the harbour.

“New independent modelling by Dr Ian Wallis shows the minimal impact aquaculture is actually having on the oxygen levels in the harbour – it’s as little as 4 per cent in the top level of the water system, and 10 per cent at depth.

“This is the science, and the fact of the matter is aquaculture is absolutely not a major influence in the oxygen levels in the harbour, or the declining population levels of the Skate.


Mr Martin urged Minister Plibersek to proceed with a rapid decision on the review and end the uncertainty for the workers, families, businesses and communities of North-West Tasmania.

“You do not need to be a marine scientist to understand Macquarie Harbour is a complex environment and the Maugean Skate is a unique species vulnerable to a range of influences, including warming waters, introduced species and industrial legacies.

“It has always been disingenuous to focus the attention solely on salmon, and it’s time the Federal Minister ends this confusing EPBC process and let the experts get on with the job of securing the future of the Maugean Skate’.


Luke Martin

CEO Salmon Tasmania