Question: Akuna Bay is located within the estuary that is a large inlet of what larger body of water?

Context paragraphs:
Mobile Bay: Mobile Bay is an inlet of the Gulf of Mexico, lying within the state of Alabama in the United States.  Its mouth is formed by the Fort Morgan Peninsula on the eastern side and Dauphin Island, a barrier island on the western side.  The Mobile River and Tensaw River empty into the northern end of the bay, making it an estuary.  Several smaller rivers also empty into the bay: Dog River, Deer River, and Fowl River on the western side of the bay, and Fish River on the eastern side.  Mobile Bay is the fourth largest estuary in the United States with a discharge of 62000 cuft of water per second.  Annually, and often several times during the summer months, the fish and crustaceans will swarm the shallow coastline and shore of the bay.  This event, appropriately named a jubilee, draws a large crowd because of the abundance of fresh, easily caught seafood it yields.  Mobile Bay is the only place on earth where jubilees are a common occurrence.

Akuna Bay, New South Wales: Akuna Bay is an urban place in Sydney, Australia.  Akuna Bay is located 38 km north of the Sydney central business district, in the local government area of Northern Beaches Council.

Forebay (reservoir): A forebay is an artificial pool of water in front of a larger body of water.  The larger body of water may be natural or man-made.

Salt pannes and pools: Salt pannes and pools are water retaining depressions located within salt and brackish marshes.  Pools tend to retain water during the summer months between high tides, whereas pannes generally do not.  Salt pannes generally start when a mat of organic debris (known as "wrack") is deposited upon existing vegetation, killing it.  This creates a slight depression in the surrounding vegetation which retains water for varying periods of time.  Upon successive cycles of inundation and evaporation the panne develops an increased salinity greater than that of the larger body of water.  This increased salinity dictates the type of flora and fauna able to grow within the panne.  Salt pools are also secondary formations, though the exact mechanism(s) of formation are not well understood; some have predicted they will increase in size and abundance in the future due to rising sea levels.

Wynniatt Bay: Wynniatt Bay ( ) is an Arctic waterway and large inlet on the north side of Victoria Island, Canada, between the Richard Collinson Inlet and Hadley Bay.  Most of the bay is in the Northwest Territories, but its eastern extremities (east of the 110th meridian west) are in the Kitikmeot Region of Nunavut.  The bay opens into Viscount Melville Sound to the north.

Akuna Bay: The Akuna Bay is a bay within Broken Bay, located in the Northern Beaches Council local government area in the Northern Suburbs of Sydney, Australia.  The bay is fed by Coal and Candle Creek, with its land boundaries encased within the Ku-ring-gai Chase National Park.  A large marina in located within the bay.  The urban locality of Akuna Bay is located at the southern boundary of the bay.

Rip tide: A riptide is a strong, offshore current that is caused by the tide pulling water through an inlet along a barrier beach.  It is a strong tidal flow of water within estuaries and other enclosed tidal areas.  They become the strongest where the flow is constricted.  When there is a falling or ebbing tide, the water is strongly flowing through an inlet toward the ocean, especially once stabilized by jetties.  During these falling and ebbing tides, a riptide can carry a person far offshore.  For example, the ebbing tide at Shinnecock Inlet in Southampton New York, extends more than 300 m offshore.  Because of this, riptides are typically more powerful than rip currents.  During slack tide, the water is motionless for a short period of time until the flooding or rising tide starts pushing the sea water landward through the inlet.  Riptides also occur in constricted areas in bays and lagoons where there are no waves.  These strong, reversing currents can also be termed ebb jets, flood jet, or tidal jets by coastal engineers because they carry large quantities of sand that form sand bars far out in the ocean and in the bay opposite the inlet channel.  The term "ebb jet" would be used for a tidal current leaving an enclosed tidal area, and "flood jet" for the equivalent tidal current entering it.

Arm (geography): In geography, an arm is a narrow extension, inlet, or smaller reach, of water flowing out from a much larger body of water, such as an ocean, a sea, or a lake.  Although different geographically, a sound or bay may also be called an arm.

Broken Bay: Broken Bay, a semi–mature tide-dominated drowned valley estuary, is a large inlet of the Tasman Sea located about 50 km north of Sydney central business district on the coast of New South Wales, Australia; being one of the bodies of water that separate greater Metropolitan Sydney from the Central Coast.  Broken Bay is the first major bay north of Sydney Harbour.

Clayoquot Sound: Clayoquot Sound is located on the west coast of Vancouver Island in the Canadian province of British Columbia.  It is bordered by the Esowista Peninsula to the south, and the Hesquiaht Peninsula to the North.  It is a body of water with many inlets and islands.  Major inlets include Sydney Inlet, Shelter Inlet, Herbert Inlet, Bedwell Inlet, Lemmens Inlet, and Tofino Inlet.  Major islands include Flores Island, Vargas Island, and Meares Island.  The name is also used for the larger region of land around the waterbody (essentially its watershed).

Supporting paragraphs: Akuna Bay Broken Bay
Answer: Tasman Sea