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Norfolk Island's Reef

Discover a fragile paradise – Norfolk Island's beaches, lagoons and coral reef
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Out on A Swim

‘Out on a swim’ is a coral reef blog that tells the stories of the characters who live under the waves and what has caught my eye when ‘out on a swim’ in the lagoons of Norfolk Island. It is also a record of the difficulties Norfolk Island’s reef faces, like many others around the world, as a result of the poor water quality that has been allowed to flow onto it.

This page shows the most recent blog posts. For the complete catalogue, visit the ‘Out on a swim index’ page.

This blog is rated in the Top 20 Coral Reef Blogs in the world.

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Emily Bay, Norfolk Island

When plastic (and gold wedding) rings escape into the wild

May 11, 2021

Like many places around the globe, Norfolk Island has its issues with getting rid of waste. Even so, Norfolk Island is one of the cleanest places I’ve seen (think Indonesia, Fiji, even the Gold Coast and Noosa). But residents know that we definitely can’t be complacent. The problem of rubbish disposal is an on-going one and one that is being given serious consideration by our local government. Finding the right solution is not always straightforward, easy or cheap.

In April, I took part in a clean-up of our beaches; it wasn’t perfect by any means. We picked up plenty of our own rubbish and some that had obviously drifted in on the wind and currents from elsewhere in the Pacific.

Rubbish is a huge community responsibility – it is taken seriously by residents.

Throughout the year, many locals pick up stray rubbish on their walks and swims. We have some great retail outlets here that promote a zero-plastic ethos (Prinke Eco Store in Burnt Pine is the flag-bearer on this one) and many shops don’t provide plastic bags. Some food retailers encourage customers to bring their own take-away containers. In addition, we have a dedicated group of local volunteers who stitch hundreds of boomerang bags every year for visitors and locals to use.

View fullsize Left and middle: two mullet with plastic collars
Left and middle: two mullet with plastic collars
View fullsize 15 Feb 2021 (96)_crop.jpg
View fullsize A mullet wearing a gold wedding band
A mullet wearing a gold wedding band

So, back in February 2021, it was gut-wrenching to see a couple of sand mullet, Myxus elongatus, wearing plastic collars – those rings found on plastic juice and milk bottles. Sometimes these rings escape into the wild, and this is the sad consequence. Mullet snuffle through the sand looking for food making it so easy for a ring or hair tie to flip over their noses and get stuck.


It is such a quick job to prise the collar off the bottle and snip it before putting it in your waste.


Some of the rubbish picked up by volunteers on clean-up day in April 2021

Yesterday, I saw another mullet with a ring collar, but this one looked a shiny metallic gold, with a lot less algal growth compared to the plastic ones (see righthand image). I recalled that someone had posted on our local community social media pages about a large man’s wedding ring that had gone missing in the bay earlier this year, so I decided to see if I could find the possible owner. It didn’t take long for my suspicion to be confirmed; we now have a poor mullet weighed down with someone’s (expensive) gold wedding ring.

Injecting some levity into the situation, one local wag hilariously commented, ‘Precious … maybe Peter Jackson can come over and make wun movie … LORD OF THE MULLET!’ You have to laugh!

Always trying to find the positives of any given situation, I see this as an incentive to encourage someone to relieve the poor fish of its handicap. If the ring had been boring plastic that incentive wouldn’t exist. I also see this as a great opportunity to raise awareness about this issue.

But it isn’t just about the immediate horror of seeing a fish being slowly strangled by our refuse. Earlier this week I found five golf balls in Emily Bay, all in the same vicinity, obviously deliberately driven into the bay. The following day I found another two.

A golf ball is a serious environmental hazard. As it breaks down, the core of rubber innards unravels. All 275 metres of it. This long elastic band floats, wrapping around seaweed and corals, while the outer core disintegrates into small micro-shards of plastic that are ingested by fish and plankton. Eventually, you will be eating this plastic.

And that is before you start talking about the chemicals used in the balls: zinc oxide, zinc acrylate and benzoyl peroxide are all added to the mix when the balls are manufactured. When these leach into the marine environment, and they will, they are seriously toxic to marine life.

So while seven golf balls in Emily Bay can easily be dismissed as being a minor infringement, I bet there are a whole lot more off the other coastal fringes of Norfolk Island’s golf course. I appreciate that many of these go in accidentally, but the ones in Emily Bay had to have been hit in there for ‘fun’. Why someone would do that is another question altogether, and one I can’t answer.

Like many communities, residents of Norfolk Island are doing their best, which is, I think, a lot better than most. However, we all need to remain extra vigilant. And be aware of the consequences of our actions.

Snip those plastic rings, try to keep hair ties in your hair and not let them float away, and don’t drive golf balls into beautiful Emily. She doesn’t need them.

As for the poor mullet with the gold collar. Here’s hoping we can deliver a happy ending to his story and for the owner of the wedding ring! The mullet has a life to live and it’s only fair he gets to live it.

View fullsize Golf balls and (lots) of hair ties
Golf balls and (lots) of hair ties
View fullsize 9 May 2021 (132)_crop.jpg
← Snip the (plastic) rings!Here's looking at you! →
Featured
The Elite Fleet sails in
September 19, 2026
The Elite Fleet sails in
September 19, 2026

Nearly six years ago, my very first blog post was about the strange blue and violet creatures that live at the ocean’s surface – a group I christened Norfolk Island’s ‘Elite Fleet’. Since then I’ve seen plenty of bluebottles and the occasional violet sea snail, but never a by-the-wind sailor. Until this morning. Velella velella is not a true jellyfish, but a colonial hydrozoan with a transparent sail that lets the wind help carry it across the ocean. So what exactly is this extraordinary little creature, how does it ‘sail’, and what connects it to the rest of the fleet?

Read more →
September 19, 2026
In a nutshell – where I stand on the proposed Norfolk Island Marine Park
September 18, 2026
In a nutshell – where I stand on the proposed Norfolk Island Marine Park
September 18, 2026

I support the proposed expansion of Norfolk Marine Park and its renaming as Norfolk Island Marine Park. There is much to welcome – strong offshore protection, no mining, and recognition of the importance of sustainable local fishing. But I also have some reservations. Why does Cascade need to be removed from the Marine Park at all? How will more than 430,000 km² actually be monitored and enforced? How do we make sure Norfolk people have a genuine role in management? And, above all, how do we ensure that the enormous new park does not draw attention away from the small, stressed reef immediately beside us?

Read more →
September 18, 2026
No seagrass, but plenty of turtles
September 13, 2026
No seagrass, but plenty of turtles
September 13, 2026

Norfolk Island does not have seagrass, although one of our most conspicuous green algae is often mistaken for it. Feather and grape Caulerpa can both form striking patches across the lagoon. I take a closer look at what Caulerpa actually is, why it is so easily confused with seagrass, and where our green turtles fit into the story.

Read more →
September 13, 2026
Watching El Niño from Norfolk Island
September 6, 2026
Watching El Niño from Norfolk Island
September 6, 2026

El Niño is strengthening across the Pacific, but that does not tell us exactly what the coming months will bring to Norfolk Island. After a long wet spell, I am watching our rainfall and water supplies more closely again – and, underwater, keeping an eye on sea temperature, algae, coral recruits and the fish that turn up on the reef.

Read more →
September 6, 2026
What the world’s reefs are telling Norfolk Island
September 2, 2026
What the world’s reefs are telling Norfolk Island
September 2, 2026

Two major new coral reef reports carry a clear message for Norfolk Island: reefs can recover when pressures ease, but the time available for recovery is shrinking. Norfolk Islanders were raising concerns about water quality, runoff and the health of Emily and Slaughter Bays nearly forty years ago. Today we have much better science, a changing climate and a far clearer understanding of how closely the catchment and reef are connected. This article looks at what that means for water quality, long-term monitoring, dredging and how we manage Kingston from land to sea.

Read more →
September 2, 2026
When the map changes
August 25, 2026
When the map changes
August 25, 2026

A fish once thought to belong only to Norfolk turns up elsewhere; another appears here hundreds of kilometres beyond its known range. Cardinalfishes and a Sabre squirrelfish show how our maps of species distributions are revised.

Read more →
August 25, 2026
Endemic, native, undescribed – what do these words actually mean?
August 24, 2026
Endemic, native, undescribed – what do these words actually mean?
August 24, 2026

A Norfolk chromis that turned out not to be Chromis fumea, a blenny found nowhere else, and a tiny goby that may not yet have a name. A look at what we mean by native, endemic, undescribed and newly described – and why scientific names sometimes change.

Read more →
August 24, 2026
What’s grazing in the green stuff?
August 16, 2026
What’s grazing in the green stuff?
August 16, 2026

A proliferation of Bryopsis on the reef has brought some beautiful little underwater grazers with it. I follow the trail from sap-sucking sea slugs and egg masses to a bigger question – why is there so much Bryopsis around at the moment?

Read more →
August 16, 2026
The clam beneath Emily Bay
August 8, 2026
The clam beneath Emily Bay
August 8, 2026

I’ve seen the beautiful shells of Laciolina chloroleuca in Emily Bay for decades, but I’d never really stopped to wonder where the living animals were. It turns out they may be buried half a metre beneath the sand. A closer look at an easily overlooked clam, its extraordinary shell markings, and the hidden life beneath our lagoon.

Read more →
August 8, 2026
Reflections of an accidental marine scientist
August 1, 2026
Reflections of an accidental marine scientist
August 1, 2026

What I thought would be a steady plod towards retirement, with plenty of time spent nursing grandchildren, was abruptly upended exactly six years ago today. This is the story of how an environmental catastrophe changed the course of my life – and led me to reinvent myself. It is a reflection on how, and why, I became an accidental marine scientist.

Read more →
August 1, 2026

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