The Port Macquarie Marine Discovery Centre is one of thirteen Marine Discovery Centres dotted around Australia's coastline and is a proud member of the Marine Discovery Centres Australia (MDCA).

• Woodbridge Marine Discovery Centre in Tasmania
• Queenscliff Marine Discovery Centre in Victoria
• Henley Beach Marine Discovery Centre in South Australia
• Dolphin Discovery Centre in Bunbury, Western Australia
• Naturaliste Marine Discovery Centre in Western Australia
• Bondi Beach Marine Discovery in New South Wales
• Ballina Marine Discovery Centre in New South Wales
• Hastings Point Marine Environments Field Study and Resource Centre in New South Wales
• Sapphire Coast Marine Discovery Centre in Eden, New South Wales
• Thursday Island Marine Discovery Centre in Queensland
• Central Coast Marine Discovery Centre in New South Wales