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 Where is Moreton Bay?

Absolute location: It is located at approximately 27oS 153oE.

Relative location: Moreton Bay is located on the South East Coast of Queensland, approximately 15 km east of Brisbane. Its southern limit is South Stradbroke Island and it extends north past Bribie Island to Caloundra. It includes North Stradbroke Island and Moreton Island. 


                                                                                Map of MB

READ: A brief introduction:

The Moreton Bay catchment is also important t as it takes in many agricultural areas, large urban areas and areas used for forestry and mining. It is used for many purposes including fishing (both recreational and commercial), other recreation (such as swimming), tourism, as a port, for education and research, and it is an important habitat for many species including the dugong. It is a RAMSAR wetland of international significance. It also contains sites of Indigenous significance including middens, fish traps, artefact scatters, scarred trees and quarries.

There are many things that threaten Moreton Bay, including sediment runoff (caused by sewage and agriculture), urban runoff, algal blooms, damage caused by boats and moorings, turbidity, flooding, coastal development and fishing.

Moreton Bay is an important marine ecosystem. It has one of the largest seagrass beds in the world, includes an extensive mangrove system and contains one of the largest populations of dugongs close to an urban area. The bay is also home to dolphins, multiple turtle species, over 40 migratory and resident shore bird species, over 1000 species of fish and many other marine organisms. It is also visited by migrating whales, including the Humpback and Orca. 

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Sea grass meadows form part of the natural environment in this region.

Seagrass are not grasses, but like grasses they are flowering plants. They are found in sheltered sandy and muddy bays and coastal areas, where they are both food sources and habitat for many organisms including young fish, sea urchins, sea turtles and dugongs. Seagrasses trap sediments, stabilise the seabed, filter nutrients and prevent erosion. Seagrasses are very sensitive to change and need a fine balance of sunlight, oxygen and nutrients to grow. They require the most sunlight of all aquatic plants, and cannot grow in murky water. The presence of algae or excess phytoplankton and water turbidity can all effect water quality and the amount of sunlight that reaches the seabed. Dugongs are herbivores and their diet almost solely consists of seagrass.



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