flynn reef

By | October 8, 2025

I have always wanted to visit Flynn Reef.  After our friends on Anui wrote about Flynn Reef a few seasons back and Gerry from Aqualibrium kept mentioning it, I was quite thrilled to finally get there.

Flynn Reef has several commercial moorings and one public mooring on the western end (nowhere to anchor) which The Bossa nabbed.

Flynn Reef is approximately 50 nautical miles north east of Cairns on the outer Great Barrier Reef, near Milln Reef (which we visited last season). It is one of the closest reefs to the continental shelf and the Coral Sea. Both reefs are not really on the main thoroughfare. Fine by us.  But it is a popular destination for the tourist day trippers. Several large boats visited over the three days we were there. There are several commercial moorings but only one public mooring which we nabbed.

It did not disappoint!

There were so many areas to snorkel and with so much colourful activity below the water, my eyes were darting everywhere. With crystal clear water, numerous gullies and swim throughs, reef walls, coral boulders and so much fish life, Flynn was a treat.  

But Flynn Reef was all about the fish. 

It wasn’t really about how many fish there were, but more about the variety of fish at Flynn, some I hadn’t seen before. There was always something happening under the water. It was fun just observing. Every fish had a role to play in this lively underwater city. 

So this post is all about the fish.

A few tips first … It’s not easy taking photos of fish. They swim fast.  If they don’t spot you at first, they will soon after and then they’re gone. It’s so easy to end up with way too many photos of fish tails and bums as they speed away. What we really want is a photo of a fish’s behaviour, or if not, at least a really clear photo with the fish in focus (something else that’s tricky to deliver) and maybe if I’m really really lucky, it’s even a fish looking at ‘moi’. 

My first snorkel revealed a hint of the treat I was in for … a large Maori Wrasse swimming by quite closely (one even visited The Bossa), a Scribbled Pufferfish I tailed and numerous very large Steephead (or Humphead) Parrotfish chomping on the coral before excreting their fine sand.

This Maori Wrasse visited The Bossa after a few toast crumbs were thrown in to the water …

While snorkeling at a large bommie near The Bossa (you can see it in the drone photo above) I spotted my all-time favourite fish, a Clown Triggerfish.  In fact, two. I’ve only ever seen these in the waters of the New Caledonian lagoons, and they were quite deep then. These two however, were quite shallow and not too fazed by me. I stalked these two for quite some time managing to get some pleasing shots and more importantly ones in focus. Very chuffed!

This fish is amazing. Check out these patterns, the tail, the white spots, the back and the mouth of the Triggerfish.   Where are the eyes? Just above the white stripe. 

I also spotted two other species of Triggerfish, a Titan and an Orange-lined Triggerfish.

Triggerfish have chisel-like teeth and powerful jaws to crush their prey, often crabs and sea urchins. I could hear that crunch! They are quite feisty and have been known to take a chunk of flesh out of unsuspecting divers. Their name? They get their name from their unique dorsal fin on their back which has three spines. It can be locked, thus used as an anchor, hence the ‘trigger’ in their name.

I have been meaning to add this ‘lucky shot’ feature in past posts, never mind, better late than never.  Sometimes everything falls in to place when we take photos underwater, the subject, the light, the angle and just maybe the photo is actually in focus (many aren’t). But we are talking about fish. They are quick. Sometimes we are just lucky.

a lucky shot …

There were so many Parrotfish at Flynn and big colourful ones too. I could hear them clearly chomping hard on the coral. I took so many photos of their activity.

But this Parrotfish actually swam towards me and kept swimming towards me. But superfast. Check out those teeth!

I saw several Steephead or Humphead Parrotfish. This the largest species of the Parrotfish and can grow up to 1.5 metres long. These are not colourful at all and it’s easy to understand why they are named as such. They use their forehead hump to break off the coral that they then digest. They can produce up to 90 kilos of sand per year.  Yep that’s where our sandy beaches come from!

A moody image of a large school of Humphead Red Snappers hovering.

Here’s a slideshow of other fish I photographed, all are labelled …

On my last snorkel I spotted another favourite, a Pink Anenomefish. These ones were quite shy and their Sea Anemone was open revealing the swaying tentacles and not the vibrant red underside. A wonderful way to end my time at Flynn Reef though.

After an overnight stop at the Little Michaelmas sand cay and another at Low Isles, it was time to reprovision while another blow passed through. We’ve had a terrific run of calm days after leaving Fitzroy Island and it’s bloody hot! 

With shallow clear waters to anchor in, a sandy bottom and some protection from the sand cay, Little Michaelmas is a favourite of ours. I caught the cay just before the tide swallowed it!

We are currently in the Port Douglas Marina ‘resetting’.  We’ve enjoyed a visit from our Cairns friends again, a few evenings dining out, the usual jobs and we’ve met up with the new owners of our friend Gerry’s boat Aqualibrium which is berthed right next to us.

After several chats with neighbouring boats, including a local and then finally our good friends on Anui, we have decided not to go north to Lizard Island.  The weather gods are not on our side and we are looking forward to catching up with family in the Whitsundays at the end of the month.

We do thank everyone who has provided us with Lizard Island intel.  Hopefully it will be used next season!

14 thoughts on “flynn reef

  1. Kaycee Frame

    Wow Amanda great photos! I can’t believe all the beautiful patterns on some of the fish. I think the Orange Spotted Fishie was my favourite.

    Reply
    1. Amanda Post author

      Thanks Kaycee. I know, the triggerfish are amazing. The orange-lined one has such intricate patterns also. Not surprised it’s your favourite. Flynn Reef was so good.

      Reply
  2. sv-anui.com

    Hiya Amanda, brilliant photos… The quantity and variety of fish makes up for so so coral. Your Clown Triggerfish is a standout but all your shots are beautiful and the behaviour of the Steephead Parrotfish you captured is great fun! Glad you enjoyed Flynn and got to spend unhurried time there. Flynn and Milln are special, being on the very edge of the continental shelf. More reefs to enjoy on your way south… Lizard can wait… There is always next year!

    Reply
    1. Amanda Post author

      Thankyou Chris. It was such a treat finding so many different fish, all doing something different. Yes how was that Steephead Parrotfish dump I spotted! So many of those fish & all reasonably friendly. Lizard will still be there next year as you say.

      Reply
  3. Darren Smith

    Loving your updates Amanda and tracking progress on Marine traffic app. Lizard or bust next year…

    Reply
  4. jeanette levoune

    Hi Amanda brilliant photography and descriptions, really enjoyed reading your blog, felt like I was there swimming amongst the coral and fish. Just beautiful. Lizard will be there next year hope you have a good sail south and get a few northerlies along the way. We are heading south ourselves now south of Mackay after leaving Keswick this morning. Safe travels and enjoy the Whitsundays when you get there⛵️

    Reply
    1. Amanda Post author

      Always next year! We were hopeful but the weather just wasn’t sitting right for us. We are heading sth tomorrow & we’ll just have to put up with a headwind for a few days albeit light (as per the forecast). Looks like you’ll have a comfortable passage south. Safe trip!

      Reply
  5. Kerry Wellington

    Very envious of your clown triggerfish sightings they have gone to the top of my list, good to know about moorings etc out there, it might be next season for us ⛵️🏴‍☠️👌👏👏

    Reply
    1. Amanda Post author

      A very special fish Kerry & not common. Yep you need to chk out the mooring options ahead as some of these reefs don’t offer anchoring options. Helps that there are so few cruising boats around.

      Reply
  6. Patsy Kidman

    Just had a coffee and your blog is unbelievable , such amazing fish, every one was a favourite as I went along but I had a little talk to that pink anenome fish face to face so he became the one . I want a photo on skylight if you can . Mum x

    Reply
    1. Amanda Post author

      Thanks mum! So much to like about all these fish. Yes those little Pink Anemonefish are a favourite of mine too. I’ve sent some pics to your skylight. X

      Reply
  7. Sally Petrie

    What an envy generating blog!

    .Award worthy photos! And great read.

    Reply
    1. Amanda Post author

      Thankyou Sally. You know how much I love capturing those moments under the water. It’s extra special when you get several opportunities & nail it. I was very happy.

      Reply

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