Moreton Bay is a bay on the eastern coast of Australia 45 km from Brisbane, Queensland. The bay extends some 125 km from Caloundra in the north almost to Surfers Paradise in the south. The bay's southern navigation entrance is the Gold Coast Seaway and it is 35 km across at its widest point. It is separated from the Pacific Ocean by a chain of three sand islands - Moreton Island in the north, North Stradbroke Island, and South Stradbroke Island in the south. Tipplers Passage is the main channel on the western coast of South Stradbroke Island. The Gold Coast Seaway is at the southern extent of Moreton Bay, before the Gold Coast Broadwater.
It is one of Queensland's most important coastal resources. The waters of Moreton Bay are a popular destination for recreational anglers and are used by commercial operators who provide seafood to market. The Port of Brisbane coordinates large traffic along the shipping channel which crosses the northern section of the bay. The bay serves as a safe approach to the airport and reduces noise pollution over the city to the west of the runway. A number of barge, ferry and water-taxi services also travel over the bay. Moreton Bay has been the site of conflict between indigenous Australians and early European settlers. It contains environmentally significant habitats and large areas of sandbanks. Many parts of the mainland foreshore and southern islands are settled.