Flat Rocks is the long, low sandstone platform at the western end of Inverloch's ocean beach, named among the popular snorkelling areas of the Bunurong coast alongside Eagles Nest and Shack Bay, and the closest of the coast's rock-platform sites to the town. Parks Victoria lists it for exploring the shore and rock pools; for divers and snorkellers it offers, at high tide on a calm northerly morning, an easy reef in 2–10 m running out from the platform edge. The rock is the same layered Cretaceous sandstone as the rest of the coast, but here it lies flatter and lower, so the reef is a broad shelf cut by shallow gutters rather than the deep ledges of Twin Reefs, and the diving is correspondingly gentler: kelp and mixed algae on the shelf, sea stars, anemones, crabs, sea hares and nudibranchs in the gutters, blue-throat wrasse, zebrafish, sweep, leatherjackets and juvenile morwong over the reef, and stingarees and flathead on the sand between the platform fingers.

Port Jackson sharks and small crayfish use the few deeper ledges on the outer edge. Flat Rocks lies just outside the marine national park (which starts at Eagles Nest), so fishing and collecting are legal here, and the platform is popular with anglers and rock-poolers. Its value for divers is accessibility – a short drive from Inverloch, a short walk, and a reef that is diveable and snorkelable on days when the more exposed park sites are marginal – and it is a good place to learn the coast's high-tide, northerly-wind rhythm before tackling Eagles Nest or Twin Reefs.

The beach either side is a surf beach and unpatrolled at this end; rips run against the platform in any swell.

From Inverloch take the Bunurong Coastal Drive west about 2.5 km to the Flat Rocks car park (signposted). A short track leads to the platform and the adjacent sand – a 5-minute carry. Enter through a gully in the platform or off the sand at its edge at high tide and swim out over the reef; exit the same way.

The Inverloch surf beach and SLSC are 1 km east with toilets and parking.

The Bunurong coast faces south-west into Bass Strait and is a surf coast; shore diving is only possible on a northerly or north-easterly wind with swell under about 1 m, at or near high tide for depth over the platforms, and preferably early in the morning. Parks Victoria warns of strong currents and undertows, large unexpected waves and sudden swell changes, so watch the forecast for the day, not just the morning. Visibility is best in autumn after settled weather and drops for days after a south-westerly blow.

Year-round in principle; autumn most reliable.

Enter at high tide, swim out over the platform edge and follow a gutter seaward to 6–10 m, working along the outer reef edge with the shore on one shoulder; turn at half gas and return along an inner gutter, exiting at the same point before the tide drops.

No dive shop on the Bunurong coast; sites are dived by independent divers and Melbourne/Gippsland clubs (SEADS – South East Australian Dive Society, Dive La Trobe, VSAG). Nearest air fills in Melbourne's south-east or by arrangement in the Latrobe Valley.