Roberts Point is a small shore dive on the Halls Head coast beside the entrance to the Mandurah Ocean Marina. The Marine Life Network describes easy entry by walking over the reef and then entering the gullies with care, with nice small swim-throughs in 2–5 m.

The coastal limestone here is weathered into gutters, low ledges and swim-throughs covered in algae. Sea dragons are seen occasionally, and the reef supports smaller marine life typical of the Mandurah coast: wrasse, buffalo bream, sweep, herring cale, octopus, crabs, nudibranchs and sea stars. It is a site for a relaxed shallow dive or snorkel rather than a long swim.

The point is relatively exposed, and visibility drops in seas over 1 m, so it needs a calm morning. The main local hazard is the boat channel into the marina: stay on the reef side, tow a flag and surface carefully.

Roberts Point suits Mandurah locals and visitors who want a quick shallow dive without a boat, including new divers practising navigation in a small area. It pairs well with Blue Bay, a few minutes south along the Halls Head coast.

Published information comes from one source, and precise coordinates are not given. Check entry conditions on the day.

Because the site is so shallow and close to shore, it is also a good place for a first night snorkel in calm weather, when octopus and crabs are active. As with any site on this stretch of coast, avoid the days after heavy rain, when runoff and estuary water reduce visibility, and keep an eye on the tide, as the reef platform is slippery at low water.

From Mandurah town centre cross the Old Mandurah Traffic Bridge to Halls Head and follow the coastal roads to Roberts Point, beside the Mandurah Ocean Marina entrance. Park in the beachside parking. Entry is easy: walk over the reef and enter the gullies carefully.

The boat channel into the marina is nearby, so stay on the reef side and use a dive flag.

Relatively exposed to westerly and south-westerly swell; visibility is poor in seas over 1 m. Dive on calm mornings with easterly winds, before Mandurah's strong summer sea breeze. Estuary outflow on the ebb tide can also cut visibility.

North-westerly winds ahead of winter fronts also stir up the water, so the best period is late summer and autumn.

Walk out over the reef, enter a gully carefully and follow the small swim-throughs along the reef in 2–5 m, returning to the same entry. Stay clear of the marina channel.

No regular operator; local divers and snorkellers.