Representatives from the housing, tourism and fishing industries were among the guest speakers, but Environment and Conservation Minister Paul Caica did not attend, calling the meeting politically motivated.
The meeting was convened by Liberal MP Vicki Chapman who says the plan will devastate many country areas and wreck family holiday home investments.
Fishing enthusiasts are worried that the proposal will make fishing illegal in many popular areas such as Kangaroo Island and Yorke Peninsula.
But the man who designed the software used by the Government to determine the park locations – Professor Hugh Possingham – says dozens of studies show that marine parks will lead to better recreational fishing.
So who’s right?
Peter Owen, the Wilderness Society’s Campaign Manager, speakes to Catherine Zengerer about their side of this debate. She started by asking him about a separate event held in Glenelg last night to support the proposal.