The Cod Hole is a compact but distinctive site off Port Macquarie built around two bommies connected by a natural rock arch, the two peaks rising to about ten and six metres respectively from a base around eighteen metres — a manageable depth range that keeps the site accessible while still offering genuine topographic interest in the arch connecting the two formations. Despite the name, this is more a macro and photography site than a big-fish destination, its main drawcard being the dense covering of soft corals and sponges across both bommies, which in turn supports an excellent range of nudibranchs for divers willing to look closely. Wobbegongs are a reliable resident here, typically found resting in the open on the bommie tops or tucked into the arch itself, and the connecting swim-through gives divers a satisfying sense of structure and route within what is otherwise a fairly compact site that can be thoroughly explored within a single tank.

Because of its manageable depth and interesting but non-technical topography, the Cod Hole is a popular choice for Scuba Haven's regular Port Macquarie boat schedule, often paired with Bird Rock or a similar nearby site to make up a two-dive day. It is a good representative example of the kind of solid, moderate-depth reef diving available close to Port Macquarie without needing the longer run out to Cod Grounds or the Camden Haven pinnacle cluster. It is a good example of how a small, unassuming site can still deliver a genuinely satisfying dive when the topography and resident life line up this well.

Boat departing Port Macquarie's Town Wharf, a short run of around 15-20 minutes to the site.

This stretch of coast is exposed to easterly and south-easterly swell with limited natural shelter; charters want under about 1.5 m swell and moderate wind to run safely. Visibility is best in autumn and early winter after a run of settled weather and drops noticeably after East Coast Lows and river flood outflows.

Descend onto the first bommie (rising to about 10 m) and swim through the natural arch connecting it to the second, shallower bommie (rising to 6 m), checking both formations for resident wobbegongs and working the sponge- and soft-coral-covered surfaces for nudibranchs along the way.

Scuba Haven (Port Macquarie) — regular boat dives, year-round, weather permitting.