Greg James

Upper Gulf St. Vincent Marine Park


Upper Gulf St. Vincent Marine Park
Investigator Thorny Passage Thorny Passage Neptune Islands Gambier Islands Southern Kangaroo Is. Investigator Thorny Passage Sir Joseph Banks Group Franklin Harbor Upper Spencer Gulf Eastern Spencer Gulf Southern Spencer Gulf Lower Yorke Peninsula Encounter Western Kangaroo Is. Southern Kangaroo Is.

General Marine Park Information

The Upper Gulf St. Vincent Marine Park covers 966km2 in a triangle shaped area, encompassing all of the upper area of Gulf St. Vincent north of a line between Parara Point on Yorke Peninsula to the northern limit of Port Gawler Beach on the east coast of the gulf. In the upper reaches of the gulf, you will find low-energy, heavily tidal areas with mangroves and tidal flats. Further south along the coasts, the mangroves slowly give way to some sandy beaches, but tidal flats are still quite common.

Long stretches of weed beds are common in the shallow coastal waters, and provide a habitat for female blue and sand crabs during their mating season. Baby squid and octopus are also prevalent and the flat sandy bottom of the sea-bed is residence to prawns, cockles and clickers.


GPS Boundaries*

  • The western most point is near Parara Point, at 1375440.15E, 342726.61S.
  • The boundary then extends up along the coast (at median high water mark) to the upper tip of the gulf, before running down the eastern coast to 1382554.41E, 343745.59S.
  • It then extends out into the open water of the gulf, meeting up with the first point listed above.

Fishing Information

The wetlands in this area provide a habitat for the juveniles of many marine creatures including King George whiting, blue swimmer crabs and western king prawns. Fishos will find blue crabs, sand crabs, yellowfin whiting, flathead, garfish and mullet around the sandier bottomed sections of this area.

*Note: GPS boundaries are approximate positions only. For more detailed information, please refer to the DEH website.