The Jibbon reef complex is a cluster of deep reefs discovered by McFadyen and the St George Scuba Club from the 2000s onward, named in a running joke after fast-food outlets – because such outlets are always found near one another. Pizza Reef, named because it is round, came first; KFC, Maccas, Hungry Jacks, Red Rooster and Oporto followed as the club found neighbouring reefs, often by accident when wind pushed the boat off the intended mark. Oporto, discovered in 2008, is on the northern edge of the reef system that extends from Jibbon Bombora.

The sand off the edge is about 25–26 m and the reef about 22 m. At the usual anchorage the reef has a large, low overhang on the south side of a section of reef that loops back from the north-east to the west, and between the overhang and a large, low rock is a small tunnel. West of the anchor the reef runs for a considerable distance, forming a kind of reef island joined to the main formation by only a thin edge.

The fish life is abundant – McFadyen's group recorded seapike, silver sweep, trevally, one-spot pullers and a few very large yellowtail kingfish – and the reef carries the sponges, sea squirts and gorgonians typical of the complex. A good route heads west along the northern edge to the end of the reef, south to the main reef and then south-west towards Red Rooster, before returning east. Oporto fills out the fast-food menu and is useful when the other reefs have been dived, or as a combined dive with Red Rooster.

There is no charter; it is a private-boat or St George Scuba Club dive, and its depth makes nitrox worthwhile. It suits experienced Advanced divers.

Boat only. Launch in Port Hacking (Gunnamatta Bay/Tonkin Park at Cronulla, Lilli Pilli or Bundeena ramps) and run out through the entrance; the Jibbon reef complex lies just east and south-east of Jibbon Bombora, 5–10 minutes from the ramps. McFadyen's GPS is 34° 04.6424' S 151° 10.936' E, on the northern edge of the reef that extends from Jibbon Bombora.

Anchor on the reef at about 22 m; the sand off the edge is 25–26 m.

These reefs sit just outside Port Hacking, exposed to swell from the north-east through the south-east, with some southerly wrap past Jibbon Bombora; plan on seas under about 1.5 m. At 20–27 m they are below most surge once down, but anchoring needs moderate conditions. Water quality is good because the adjacent Royal National Park contributes little runoff, and visibility is usually 12–20 m; heavy prolonged rain can bring dirty water out of Port Hacking on the ebb.

Westerly and north-westerly winds give the best days.

Look at the large low overhang and the small tunnel beside it at the anchor, then go west along the northern reef edge for about five minutes to the end of the reef, head south to rejoin the main reef, and explore south-west and south along the edge towards Red Rooster before returning east to the anchor.

Nitrox (EAN28–32) recommended; bottom time on air about 22–29 min.

No regular charter – private boat or dive-club (St George Scuba Club) only; no charter boat currently operates out of Port Hacking.