In July and August 1799 Matthew Flinders chartered the coast from Moreton Bay to Hervey Bay in the Norfolk. Although he established that Fraser Island was not a peninsula but an island, he failed to find a navigable channel through the Great Sandy Strait. His explorations of the area is commemorated by a monument called Matthew Flinders Lookout at the top of an escarpment facing the bay in Dayman Park, Urangan. Lieutenant Joseph Dayman was the first to navigate through the Great Sandy Strait on 10 November 1846 in a small decked boat called the Asp. It had been intended that Dayman rendezvous with HMS Rattlesnake but that ship had already departed. Dayman decided it was safer to take the Asp through the Great Sandy Strait rather than risk taking the route to the ocean side of the Fraser Island as he was concerned about the Breakpoint Spit at the north of Fraser Island.
Environment
A complex landscape of mangroves, sandbanks, intertidal sand, mud islands, salt marshes and seagrass beds, the Strait is an important habitat for breeding fish, crustaceans, dugongs, dolphins and marine turtles. On Whalesong Cruises, view the migrating humpback whales use the calms waters of the strait to rest for a few days between July and November. An analysis of commercial catch data in the area between 1988 and 2003 revealed a significant reduction in fish stock. The campaign against the Traveston Crossing Dam included claims the dam would have a significant environmental impact on the Great Sandy Strait. It is located within the boundaries of the Great Sandy Marine Park and adjoins other protected areas within or adjacent to the Strait include Great Sandy National Park, Poona National Park and Great Sandy Conservation Park.
Birds
The lower part of Great Sandy Strait was listed under the Ramsar Convention as a wetland of international significance in 1999. The area is also an important roosting site for CAMBA and JAMBA listed species. Some 806 km2 of the strait has been identified by BirdLife International as an Important Bird Area because it supports about 120,000 non-breeding waders, including over 1% of the global populations of bar-tailed godwits, eastern curlews, great knots, grey-tailed tattlers, lesser sand plovers, pied oystercatchers, red-necked stints and red-capped plovers, as well as small numbers of the range-restricted mangrove honeyeater.