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Cod Hole Liveaboard Diving

Our guests rated liveaboard diving in Cod Hole as 9.4

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Liveaboard Diving in Cod Hole

What To Expect On A Cod Hole Liveaboard

When anyone looks into liveaboards in Australia and the best and most well-known sites for diving on the Great Barrier Reef, they'll inevitably come across the famous Cod Hole sooner rather than later. As its name suggests, this unique place has become world-renowned due to its resident family of huge Potato Cod, making this site their permanent home. Along with the main attraction, you'll see a wealth of underwater life and be gliding through the water with visibility commonly over 25 meters with only gentle currents.

Cod Hole is located around 100 kilometers north of Cairns in Queensland, at the northern end of the Great Barrier Reef, and forms part of the Ribbon Reef section (reef number ten). Being so far away from the coast, the only realistic way to experience the best of Cod Hole is via liveaboard, lasting a few days. Most liveaboard diving tours that visit Cod Hole will also cruise through many other beautiful diving spots in the Ribbon Reefs over the duration of the trip. The conditions allow year-round diving, with water temperatures ranging from 22 to 29 degrees Celcius.

What You Can See

Many of our Australian liveaboard operators offer itineraries that visit Cod Hole as part of the dive schedule.

Even though they expect it, divers are constantly wowed by the sheer size and presence of the giant Potato Cod that has made this one of the most talked-about dive sites worldwide. They have become used to human contact and are comfortable near people, allowing a great opportunity for detailed photos of these beautiful creatures. Weighing up to a massive 60 kilograms, feeding of these fish has been sanctioned by the Queensland government, and feeding time initiates a wave of activity as other animals such as Solomon's Sweetlips, Coral Trout, and Trevally all try to get their fair share. You'll likely encounter large numbers of Maori Wrasse here, also known as Humphead Wrasse, another huge specimen - sometimes growing to 2 meters long and a whopping 180 kilograms.

If you're visiting during the Australian winter (July/August), you may be lucky and have the rare experience of viewing Dwarf minke whales. They are curious characters and often hang around when divers and snorkellers are about - a truly unique and wonderful spectacle. Your liveaboard operator may be involved in Minke Whale research and monitoring, and there may be a possibility of you participating in this.

How To Get To Cod Hole

This stunning area of the Coral Sea is situated to the very north of the Great Barrier Reef, in a remote spot far from the nearest coastal town. As such, it's only possible to visit Cod Hole on an Australia liveaboard, which will sail you in comfort to this and other outer sections of the GBR. Cairns, the most common port for departing cruises, is the best place to board your liveaboard cruise. Some Liveaboard.com operators include a stunning low-level reef flight as part of their package to commence or end the trip.

Cairns has a busy airport served by many large international carriers, making it easy to fly directly from many overseas locations. If this is not possible, you can catch a domestic flight from one of the larger Australian cities, such as Brisbane, Melbourne, or Sydney.

As with most liveaboard cruises, your operator will likely pick you up from your chosen accommodation (and take you back afterward), as part of their service.


Ribbon Reef’s remote Cod Hole is an exciting destination for one on one encounters with the massive potato cod and maori wrasse.


Cod Hole Diving Reviews

  • Rating 9.4 out of 10
  • 9.4 Superb
  • Rating 10.0 out of 10
  • 10.0 Exceptional
  • Eli R
  • Flag of United StatesUnited States

Established giant coda and large schools of sweet lips. Hunting pair of black tips, overall a must visit dive site.

Diving Cod Hole in November on the Spoilsport
  • Rating 10.0 out of 10
  • 10.0 Exceptional
  • Wade W
  • Flag of United StatesUnited States

Was my favorite site of the trip

Diving Cod Hole in July on the Spoilsport
  • Rating 9.6 out of 10
  • 9.6 Exceptional
  • Christopher C
  • Flag of United StatesUnited States

Awesome up close experience with some truly people-friendly large fish.

Diving Cod Hole in May on the Spirit of Freedom
  • Rating 9.6 out of 10
  • 9.6 Exceptional
  • Nicholas W
  • Flag of United StatesUnited States

Really fun experience meeting Spot the Cod! Reefs we’re really healthy on the West/North side too!

Diving Cod Hole in December on the Spirit of Freedom


What to know about diving in Cod Hole

Who helped protect Cod Hole from overfishing?

Australian underwater photographers Ron and Valerie Taylor publicized the site's tame potato cod in the 1970s, which helped establish it as a no-fishing zone within what's now the Great Barrier Reef Marine Park. Even so, average cod sightings per dive nearly halved between 1992 and 1998, a reminder that popularity and hand-feeding bring their own conservation trade-offs.

Where is Cod Hole located?

Cod Hole sits on Ribbon Reef #10, in the far northern Great Barrier Reef, about 250 km (155 mi) north of Cairns — reachable only by liveaboard.

Why is Cod Hole famous?

It's known for its population of giant, habituated potato cod — some exceeding 3.3 ft (1 m) and 220 lb (100 kg) — that approach divers with unusual calm after decades of interaction with Great Barrier Reef liveaboards.

How do you get to Cod Hole?

It's liveaboard-only, typically visited on a multi-day far-northern Great Barrier Reef itinerary departing from Cairns.

How deep is Cod Hole?

The site sits on a gently sloping sandy patch and reef wall in roughly 30–60 ft (9–18 m), shallow enough for good light and easy photography of the resident cod.

What is a potato cod?

It's a large grouper species (Epinephelus tukula) that can grow past 3.3 ft (1 m) and 220 lb (100 kg), known for its docile, curious behavior around divers, especially at sites like Cod Hole, where it's been protected for decades.

Is Cod Hole suitable for beginner divers?

Yes — the shallow depth and calm conditions make it accessible to divers of most experience levels.

Is fish feeding still practiced at Cod Hole?

Historically, guides hand-fed the resident cod to encourage close encounters; feeding practices have evolved over the decades amid ongoing conservation discussion about habituating wild fish to divers.

Can you see sharks at Cod Hole?

Yes — reef sharks and sea turtles are regularly spotted alongside the site's famous potato cod.

Is Cod Hole part of a marine park?

Yes — it lies within the Great Barrier Reef Marine Park as a protected, no-fishing area.

What's the visibility like at Cod Hole?

Typically excellent — often 65–100 ft (20–30 m) — among the clearest water found on the northern Ribbon Reefs.

Is Cod Hole near Lizard Island?

Yes — it's within a short cruising distance of Lizard Island and is often combined with it on the same far-northern liveaboard itinerary.

Has the potato cod population at Cod Hole changed over time?

Yes — recorded sightings per dive nearly halved between 1992 and 1998, prompting ongoing monitoring and management attention from reef authorities.

What other dive sites are near Cod Hole?

Other Ribbon Reef sites and the reefs surrounding Lizard Island are all reachable on the same far-northern Great Barrier Reef liveaboard route.

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