sentences:  The group then exited through the ocean bar and sailed south along the coast as far as the Collie and Preston Rivers and the Leschenault Inlet before returning to the Peel-Harvey estuary on 28 November 1829.From there they explored the Murray River delta, which at the time included five entrances into the estuary.The boats managed to navigate about up the river before returning to Fremantle after the 12-day trip.