Location

The Great Barrier Reef is located in the Coral Sea, on Australia’s north eastern coast. It stretches for more than 2,300km along the state of Queensland’s coastline. It begins at the tip of Cape York Peninsula in the north and starts extending down to Bundaberg in the south.
Click this link for more information:
 https://cairnsdiveadventures.com.au/reef-info/where-is-the-great-barrier-reef-located/