Western Australia
Diving in Margaret River & Augusta
The Cape-to-Cape coast has limestone reef, caves and the Hamelin Bay stingray beach, where huge smooth rays cruise the shallows; Canal Rocks, Gnarabup and Cowaramup Bay are shore dives on flat days and the offshore reefs off Augusta and Flinders Bay hold sea lions and clear water.
THE LOCAL PLANNING BRIEF
Understand the options around Margaret River & Augusta
What this regional directory records Counts describe published records, not bookable trips or confirmed open sites.
There are 27 published site records in Margaret River & Augusta. The recorded categories include shore/rock platform (12), wreck (7), reef (5), island (1). These categories reflect the database; they are not a ranking, a conditions report or an assessment of your suitability.
Use the Margaret River & Augusta site cards to compare recorded access and depth, then open the individual pages for the map accuracy and source notes. Sites grouped in a region are not necessarily close enough to combine in one day.
Research operators in Western Australia →Ask before booking
- Which town is the practical base for this departure?
- What transport and baggage limits apply?
- What is the plan if the departure is delayed?
Save the answers with the contact name and date. Separate confirmed arrangements from items still waiting for a reply.
Record your trip questions →Questions, answered
How do I choose a dive in Margaret River & Augusta?
Begin with the individual site and its source notes, then discuss the proposed trip with a local provider. The 27 published records are research options, not a list of trips available today. Match the plan to your training, recent experience and the operator’s current requirements.
When should I visit Margaret River & Augusta for diving?
Choose dates with a provider who runs the activity you want, then discuss seasonal patterns, recent conditions and alternative itineraries. A generic best-month claim cannot establish the conditions at your exact site or guarantee a wildlife encounter.
Can I use these maps to enter or navigate a dive site?
No. Recorded and approximate map positions support orientation only. Confirm the exact access, permissions, meeting point and route with the responsible local provider or manager.
Regional planning context: Tourism Western Australia — maritime heritage and shipwrecks ↗. Directory counts come from published YouDive records. Individual site claims remain subject to their source and review notes.
Dive sites in this region
WreckMargaret River & Augusta
Agincourt Wreck
An 1863 wooden barque with its cargo of timber sleepers still stacked in the hull, 100 m off the beach in 5 m.
WreckMargaret River & Augusta
Chaudiere Wreck
An 1863 Sunderland-built barque with stacked sleepers and copper sheathing, the closest wreck to the Hamelin Bay ramp.
Shore/Rock PlatformMargaret River & Augusta
Hamelin Bay Jetty & Stingrays
Large smooth and black stingrays and eagle rays gliding around the old jetty piles in waist-deep water.
WreckMargaret River & Augusta
Katinka Wreck
The bow, bowsprit, windlass and masts of an 805-ton iron barque wrecked in the 1900 storm, in 5-6 m.
WreckMargaret River & Augusta
Peak Island & Toba Wreck
A 1907 Aru Islands-built pearling ketch against the reef at Peak Island, with overhangs and hard corals around it.
WreckMargaret River & Augusta
SS Pericles Wreck
Three boilers and 10 m-high engines of a 152 m Edwardian liner in 35 m off Cape Leeuwin - all 413 aboard survived.
Shore/Rock PlatformMargaret River & Augusta
Canal Rocks
Granite sea canals and seaward limestone reefs with a sponge garden and blue groper, with a boat ramp right on site.
Shore/Rock PlatformMargaret River & Augusta
Cosy Corner
Overhangs full of blue devils, harlequin fish and foxfish on reef platforms close to shore near Augusta.
Shore/Rock PlatformMargaret River & Augusta
Flinders Bay (Augusta)
Calm, clear lagoon water with a jetty, stairs and pontoon at Augusta - easy family snorkelling.
WreckMargaret River & Augusta
Georgette Wreck (Redgate Beach)
Site of the 1876 Georgette wreck and Grace Bussell's famous rescue, with a shallow inshore reef for calm-day snorkels.
Shore/Rock PlatformMargaret River & Augusta
Gnarabup Bay & Prevelly Lagoon
A reef-protected lagoon with caves and a fish nursery, a snorkel trail and free fish-ID slates from the beach cafe.
IslandMargaret River & Augusta
Hamelin Island
A sheltered lee-side reef flat with ledges, small caves, sea fans and a long list of reef fish.
Pinnacle/BommieMargaret River & Augusta
Hamelin Island NE Bommie
A 50 m bommie with caves and swim-throughs and resident Port Jackson sharks off Hamelin Island.
Shore/Rock PlatformMargaret River & Augusta
Injidup Natural Spa
A natural rock-pool 'spa' where waves cascade over granite - a scenic swim, not a dive.
ReefMargaret River & Augusta
Mushroom Rock
An overhang with colourful invertebrates and narrow channels full of fish, a 200 m swim from the Hamelin Bay ramp.
Shore/Rock PlatformMargaret River & Augusta
Quarry Bay
A sheltered snorkel near Cape Leeuwin in the bay that supplied stone for the lighthouse.
Shore/Rock PlatformMargaret River & Augusta
Skippy Rock
A sheltered, boulder-strewn cove near Cape Leeuwin with waves broken by continuous reef - and a permanent rip to avoid.
Shore/Rock PlatformMargaret River & Augusta
The Aquarium (Yallingup)
A granite-sheltered lagoon on the surf coast, reached by a 1.3 km coastal walk - calm, clear snorkelling in a wild setting.
Shore/Rock PlatformMargaret River & Augusta
Yallingup Lagoon
A reef-protected 1-3 m lagoon beside Yallingup town with stingrays and seagrass - the Capes' easiest snorkel.
ReefMargaret River & Augusta
Cosy Corner Offshore Reefs
Island-sheltered reefs with schools of bream, sweep and zebrafish, reached by boat from Hamelin Bay.
Details need confirmationReefMargaret River & Augusta
Cowaramup Bay
Inshore reef and deeper offshore reefs with blue groper and kingfish at Gracetown, diveable on flat days.
Details need confirmationWreckMargaret River & Augusta
Cumberland Wreck
Anchor, cannon and timbers of one of WA's earliest colonial-era wrecks, hidden in weed south of Cape Hamelin.
Details need confirmationWallMargaret River & Augusta
Indicators (Canal Rocks)
Offshore walls and caves at 20-30 m off Canal Rocks, rich in fish and rarely dived.
Details need confirmationShore/Rock PlatformMargaret River & Augusta
Kilcarnup
A remote limestone reef with good fish life and some shelter from the west, reached by 4WD and a steep track.
Details need confirmation