A Marine Protected Area Network or MPA network is a network of Marine Protected Areas or Marine Reserves. A Marine Protected Area Network can be defined as "a collection of individual MPAs or reserves operating cooperatively and synergistically, at various spatial scales, and with a range of protection levels that are designed to meet objectives that a single reserve cannot achieve". Such a network can include several MPAs of different sizes, located in critical habitats, containing components of a particular habitat type or portions of different kinds of important habitats, and interconnected by the movement of animals and plant propagules.