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With its proximity to Victoria's largest city the southern end of the Bay has high visitor usage throughout the year with a huge peak over the summer months. The southern Bay is Melbourne's summer playground and many of the areas within Port Phillip Heads Marine National Park are popular for a range of recreational pursuits from snorkelling and SCUBA diving through to passive recreation on the beach. Habitat types found within the park include seagrass beds, sheltered intertidal mudflats, intertidal sandy beaches and rocky shores, subtidal soft substrata and rocky reefs, as well as the open water environment. The diversity and abundance of marine flora and fauna in this region are greater than many comparable habitats elsewhere in the world. The park is located in an area renowned for its diversity of migratory wader birds and includes a number of sites listed under a number of treaties to protect migratory bird habitat including International Convention on Wetlands of International Importance (the Ramsar Convention). The high diversity of marine life around the mouth of Port Phillip is due to the wide range of habitats in the area and its central Victorian location. The area marks the end of the range for some animals and plants that prefer the cold waters of western Victoria, but it also supports warmth-loving species from eastern Australia that can survive in the bay's relatively calm, shallow waters.Before you goConditions can change in parks for many reasons. For the latest information on changes to local conditions, please visit the relevant park page on the Parks Victoria website.Be bushfire ready in the great outdoors. Refer to the Bushfire Safety section on the Parks Victoria website for tips on how to stay safe.