AN extra $4 million for marine park management would be provided by the Labor state government, if re-elected.
The Labor policy includes doubling the funding for monitoring and surveying activities, giving more money to develop research partnerships, and getting more community members involved in marine parks.
Premier Jay Weatherill said the state Liberals wanted to "water down protections" of what he said was one of the state's greatest selling points.
"Steven Marshall has already declared that he will scrap sanctuary zones and doesn't believe in the science that supports our marine parks."
Mr Weatherill said Labor's plan would encourage more recreational fishing in marine parks.
He said it would give the commercial fishing industry "the marketing edge of catching their product in marine parks, while protecting all of this for the future."
Labor has committed $750,000 to marine park monitoring, and $100,000 to habitat surveys and mapping in sanctuary zones.
It has also committed to increasing funding for socio-economic monitoring, establishing research partnerships with universities, and collecting and processing data.
The $4 million commitment for marine park management would be delivered over four years.