Lonsdale Wall

Wall DiveWall Dive | Boat access

Advanced Open Water Rated Deep Rated Inside Port Phillip Marine Park - No Fishing Open Water Rated Reef Dive Site Slack Water Technical Rated

Lonsdale Wall
Lonsdale Wall | © Phil Watson

Depth: 12 metres (39 feet) to 38 metres (125 feet)

Located just inside The Heads of Port Philip on the Lonsdale side, Lonsdale Wall is an underwater canyon formed by the old Yarra River as it flowed out through the plains carving steep-walled edges out of soft rock sides before the sea levels rose and the Bay flooded many years ago. Lonsdale Wall extends for 1 km, therefore providing many different sights to dive. An almost vertical drop characterizes Lonsdale Wall.

The Swim Through, by Jane Headley.

Tom Wende on Lonsdale Wall
Lonsdale Wall | © Sonar Wetsuits

With overhangs and ledges and undercuts providing sanctuary to an enormous variety of fish including the spectacular Blue Devils, Leather Jackets, Magpie Morwongs, Hula Fish, Old Wives plus Crayfish and Cuttlefish. Occasional sightings of a Port Jackson snoozing under a ledge, or and if you are really lucky you may even spot a Wobbygong or Broad Nose Seven Gill Shark cruising slowly along the wall. Colourful growth in the form of soft corals, sponges, hanging sea fans in bright yellow, orange and other varieties in pink and burgundy. At least four different Nudibranchs and Seastars can be found here is you look closely. As you descend there is a slight step out every 6 to 9 metres or so, and behind each step-out, there is a huge overhang. Shining a torch under these ledges will reveal a myriad of life and colour, with sections carpeted in yellow zoanthids like a field of yellow daisies.

Lonsdale Wall from Allie Beckhurst on Vimeo.


Lonsdale Wall Location Map

Latitude: 38° 17.487′ S   (38.29145° S / 38° 17′ 29.22″ S)
Longitude: 144° 37.797′ E   (144.62995° E / 144° 37′ 47.82″ E)

Datum: WGS84 | Google Map
Added: 2019-03-15 22:04:51 GMT, Last updated: 2021-03-30 06:10:18 GMT
Source: Packo
Nearest Neighbour: The Mall, 81 m, bearing 38°, NE
Depth: 12 to 38 m.
Dive only on: SWF, SWE.

DISCLAIMER: No claim is made by The Scuba Doctor as to the accuracy of the dive site coordinates listed here. Should anyone decide to use these GPS marks to locate and dive on a site, they do so entirely at their own risk. Always verify against other sources.

The marks come from numerous sources including commercial operators, independent dive clubs, reference works, and active divers. Some are known to be accurate, while others may not be. Some GPS marks may even have come from maps using the AGD66 datum, and thus may need be converted to the WGS84 datum. To distinguish between the possible accuracy of the dive site marks, we've tried to give each mark a source of GPS, Google Earth, or unknown.

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