Criticism continues of new marine zones across South Australia.

The details have been released with the State Government stating the 19 marine parks are vital to preserving ecosystems and marine life.

The Government says the zones cover about 6% of coastal waters and create no-take zones for anglers and commercial crews.

The Oyster Growers Association claim the zones could put some farmers out of business.

Other opponents have set up a Facebook site as a forum.