What is the GSR?

The Great Southern Reef (GSR) is an interconnected system of temperate reefs spanning over 8,000 km around Australia's southern coastline, from Kalbarri in Western Australia to the NSW/Queensland state border.

The GSR extends offshore to encompass all reef habitats between the upper intertidal zone and edge of the continental shelf (0 - 250m depth).

In shallower waters, reef habitats are characterized by kelp forests and seaweed dominated assemblages as well as adjoining seagrass meadows and oyster reefs.

In deeper waters, typically below 30m, sessile invertebrates such as sponges and gorgonians dominate reef habitats.

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