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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.

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
Herbicides, heritage, and an inshore reef: what happens when land management meets lagoon health
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Signs of bleaching – 8 December 2025
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Signs of bleaching – 8 December 2025
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Nature is my teacher
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This is a thank-you note. Five years after my first Out on a swim post – written with zero marine science quals and a head full of questions – I’m still in the water, now as a PhD candidate, because an extraordinary mix of locals, volunteers, researchers and public servants decided to share what they knew. This is the story of how nature – and a very patient community – became my teachers.

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Reef grief: what dredging has done to other reefs
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From Miami to Fiji, from Dubai to tiny village harbours on atolls, dredging near coral reefs has left a long trail of scars – even on ‘small’ projects. This follow-up to last week’s Kingston post walks through real examples of what happened elsewhere, and what that should make us think about before we dig up our own reef.

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To dredge or not to dredge? The Kingston Pier channel project
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How much risk are we really taking with the planned dredging at Kingston Pier – and how much protection do our corals actually have on paper? This piece walks through what the federal approval does and doesn’t guarantee, explains why sediment and light matter so much to the reef, and asks the hard questions we need answered before we trade a deeper channel for a shallower future.

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A coral reef out of balance
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A coral reef out of balance
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After the long dry spell, the lagoon was crystal clear and full of life. But with the return of the rains, something else has returned too – the brown, filamentous mats of Lyngbya. It’s not seaweed, it’s a cyanobacterium, and when it takes hold it smothers coral and rubble alike. The reef’s way of showing us that every drop of water, from tank to tide, is connected.

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Aglow among the spines
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Aglow among the spines
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Ever seen a sea urchin that seems to glow blue from the shadows? That’s Diadema savignyi showing off its reef shimmer. Beautiful, a little spiky, and definitely not to be messed with.

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The funky seventies sea slug – Halgerda willeyi
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If ever a sea slug was channeling the 1970s, it’s Halgerda willeyi. With its groovy orange lines and chocolate-brown bumps, it looks straight out of a vintage lounge suite – the kind with shag pile carpet and bold floral cushions. Proof that nature was nailing retro design long before humans caught on.

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Haddon's barometer
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Haddon's barometer
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This Haddon’s anemone has been quietly living in the middle of Norfolk Island’s Emily Bay for years, bleaching and recovering with the seasons. Like corals, sea anemones host microscopic algae that provide most of their food. When stressed by heat or rainfall changes, they lose colour – and tell a story about seasonal changes to the weather.

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Honoured to be featured
Sep 30, 2025
Honoured to be featured
Sep 30, 2025

I left school in the UK nearly 50 years ago, so it was a pleasant surprise to be invited to share some images and take part in an interview for an article about my work, to be published in the annual glossy magazine the school now produces. Here is the end product.

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