Sheltered Waters, Sand Islands and Wetlands of Moreton Bay

Overview

Moreton Bay is a large sheltered marine landscape on Queensland’s south-east coast, stretching roughly 125km from Caloundra to the Gold Coast and covering about 3400km². It includes most of the bay’s tidal waters, many river estuaries and a broad mix of coastal habitats, all sitting close to Brisbane yet feeling very different once you are out on the water or looking across the islands and mudflats.

The bay sits behind Minjerribah and Mulgumpin, whose long sand masses help buffer ocean swell and shape the calmer character of the waters inside. That sheltered setting, combined with the meeting of tropical and temperate species, gives Moreton Bay an unusually rich ecological mix.

Highlights

What stands out here is the scale and variety of the seascape. Moreton Bay brings together open water, tidal flats, mangrove-lined inlets, sandy beaches, seagrass meadows, rocky shores and coral and rocky reefs, all within one connected system. The contrast between broad shallow flats and the larger sand islands gives the bay much of its visual character.

The wetlands are a defining part of the place. Moreton Bay is one of Australia’s largest Ramsar-listed wetland sites, and that international significance comes through in the sweep of intertidal country around the bay’s edges and islands. Even without focusing on any one walk, it is a place of changing light, wide horizons and constantly shifting shorelines.

Best Time to Visit

Moreton Bay can be rewarding at any time of year, but the cooler, drier months from autumn to spring are often the most comfortable for spending time outdoors around the coast. Summer brings hotter, more humid conditions, while seasonal changes also affect what you may notice in the bay, including the arrival of migratory shorebirds in the warmer months and humpback whales moving through the region seasonally.

Plants and Animals

Few places this close to a capital city hold such a broad spread of marine and coastal habitats. Seagrass meadows, mangroves, saltmarsh, mudflats, sandy beaches, reefs and rocky shores all support different parts of the bay’s food web and help sustain its high biodiversity.

Wildlife is one of Moreton Bay’s defining strengths. The bay provides important habitat for shorebirds, dugong, dolphins, marine turtles, grey nurse sharks and many fish species, and it also supports seasonal visitors such as humpback whales and migratory wading birds. The overlap between tropical and temperate species adds another layer to that diversity.

Culture and Heritage

The land and sea Country within and adjoining Moreton Bay Marine Park holds significant cultural value, with enduring connections for the Kabi Kabi, Quandamooka, Jagera, Turrbal and Yugambeh-speaking peoples. Those connections extend back thousands of years and continue in the bay and along the surrounding coast today.