The Two Fold Bay was a 22 m, 40-ton steel fishing trawler that struck a reef south-west of Alkimos in 1997, making her, according to divingwawrecks, the most recent shipwreck off the metropolitan coast at the time. She lies about 4 nautical miles north-west of Mindarie Marina in about 11 m.

The fractured hull rests on its starboard side against a reef ledge. Wreckage is scattered to the west over sand and kelp-covered reef, including the wheelhouse, outriggers and mast, so the dive combines a small modern wreck with reef exploration. Ledges and reef around the site offer more to see, and the Marine Life Network notes colonising species on the hull; it describes the vessel as 200 tons and lists 6–12 m.

Fish life includes buffalo bream, wrasse, old wives, bullseyes and sweep, with lobsters in the reef.

The site lies about 200 m east of a line of breakers, which reduces visibility compared with other offshore sites. Choose a day with swell under 1 m. The Two Fold Bay suits Open Water divers wanting a short, shallow wreck dive, and it combines well with the Eglinton or the Conference. As a small, relatively recent wreck, it also shows how quickly steel colonises on this coast: within a few decades the hull has become a reef in its own right. Carry a cutting tool, as fishing line snags on the outriggers.

Water temperatures on this coast range from about 17–18 °C in late winter to 22–23 °C in late summer; a 7 mm wetsuit with a hood suits most of the year.

Launch at the Mindarie Marina public ramp (Mindarie Keys, off Marmion Avenue, about 40 minutes from the Perth CBD). Run about 4 nautical miles north-west to S 31°38.818' E 115°39.201', about 15 minutes. The site sits roughly 200 m east of a line of breakers, so approach from the east and anchor in sand clear of the break.

The Eglinton wreck on Pamela Shoal is nearby.

The north-metro offshore sites face the open Indian Ocean with no island shelter. Swell comes mainly from the south-west and west, and the summer south-westerly sea breeze usually arrives late morning to early afternoon, making the run home rough. Needs swell under 1 m.

The nearby breakers stir the water, so visibility is often lower than expected for an offshore site. Dive in the morning, before the sea breeze.

Anchor east of the site, descend to the hull lying on its starboard side against the reef ledge, then explore the wheelhouse, outriggers and mast scattered on the sand and reef to the west before returning.

Occasional club and private-boat dives from Mindarie.