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Norfolk Island's Reef

Discover a fragile paradise – Norfolk Island's beaches, lagoons and coral reef
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    • Kingston, Norfolk Island
    • Underwater
    • Reef Fish
    • Sharks
    • Eels
    • Corals
    • Sea Anemones
    • Nudibranchs, Sea Slugs and Flatworms
    • Octopuses
    • Sea Urchins and Sea Cucumbers
    • Sea Stars
    • Turtles
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    • Out On A Swim Index
  • Out on a swim - blog
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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 blog is rated in the Top 20 Coral Reef Blogs in the world.

Blue drummer - Girella cyanea

Here's looking at you!

April 27, 2021

I thought I’d have a bit of fun and post some of my favourite images of fish as they look at me head on. It’s such a beautiful perspective, and one that often makes you wonder what they are thinking. Enjoy!

View fullsize Multispine damselfish - Neoglyphidodon polyacanthus
Multispine damselfish - Neoglyphidodon polyacanthus
View fullsize Bluespine unicornfish - Naso unicornis
Bluespine unicornfish - Naso unicornis
View fullsize Pacific rockcod - Trachypoma macracanthus
Pacific rockcod - Trachypoma macracanthus
View fullsize Blacktip morwong - Cheilodactylus francisi
Blacktip morwong - Cheilodactylus francisi
View fullsize Three-striped butterflyfish - Chaetodon tricinctus
Three-striped butterflyfish - Chaetodon tricinctus
View fullsize Masked bannerfish - Heniochus monoceros
Masked bannerfish - Heniochus monoceros
View fullsize Multispine damselfish - Neoglyphidodon polyacanthus
Multispine damselfish - Neoglyphidodon polyacanthus
View fullsize Spotted porcupinefish - Diodon hystrix
Spotted porcupinefish - Diodon hystrix
View fullsize Three-striped butterflyfish - Chaetodon tricinctus
Three-striped butterflyfish - Chaetodon tricinctus
View fullsize Bluespine unicornfish - Naso unicornis
Bluespine unicornfish - Naso unicornis
View fullsize Halfmoon grouper - Epinephelus rivulatus
Halfmoon grouper - Epinephelus rivulatus
View fullsize Banded scalyfin - Parma polylepis
Banded scalyfin - Parma polylepis
View fullsize Dick's damsel - Plectroglyphidodon dickii
Dick's damsel - Plectroglyphidodon dickii
View fullsize Snubnose dart - Trachinotus blochii
Snubnose dart - Trachinotus blochii
View fullsize Vagabond butterflyfish - Chaetodon vagabundus
Vagabond butterflyfish - Chaetodon vagabundus
View fullsize Banded scalyfin - Parma polylepis
Banded scalyfin - Parma polylepis
View fullsize Sixbar wrasse - Thalassoma hardwicke
Sixbar wrasse - Thalassoma hardwicke
View fullsize Multispine damselfish - Neoglyphidodon polyacanthus
Multispine damselfish - Neoglyphidodon polyacanthus
View fullsize Three-striped butterflyfish - Chaetodon tricinctus
Three-striped butterflyfish - Chaetodon tricinctus
View fullsize Brassy drummer - Kyphosus vaigiensis
Brassy drummer - Kyphosus vaigiensis
View fullsize Banded scalyfin - Parma polylepis
Banded scalyfin - Parma polylepis
View fullsize Blue drummer - Girella cyanea
Blue drummer - Girella cyanea
View fullsize Pacific rockcod - Trachypoma macracanthus
Pacific rockcod - Trachypoma macracanthus
View fullsize Multispine damselfish - Neoglyphidodon polyacanthus
Multispine damselfish - Neoglyphidodon polyacanthus
View fullsize Three-striped butterflyfish - Chaetodon tricinctus
Three-striped butterflyfish - Chaetodon tricinctus
View fullsize Black butterflyfish - Chaetodon flavirostris
Black butterflyfish - Chaetodon flavirostris
View fullsize Painted morwong - Cheilodactylus ephippium
Painted morwong - Cheilodactylus ephippium
View fullsize Norfolk cardinalfish - Ostorhinchus norfolcensis
Norfolk cardinalfish - Ostorhinchus norfolcensis
View fullsize Redcap triplefin - Enneapterygius rufopileus
Redcap triplefin - Enneapterygius rufopileus
View fullsize Pinstriped butterflyfish - Chaetodon lunulatus
Pinstriped butterflyfish - Chaetodon lunulatus
View fullsize Clouded saury - Saurida nebulosa
Clouded saury - Saurida nebulosa
View fullsize Notch-head marblefish - Aplodactylus etheridgii
Notch-head marblefish - Aplodactylus etheridgii
View fullsize Surge wrasse - Thalassoma purpureum
Surge wrasse - Thalassoma purpureum
View fullsize Multispine damselfish - Neoglyphidodon polyacanthus
Multispine damselfish - Neoglyphidodon polyacanthus
View fullsize Multispine damselfish - Neoglyphidodon polyacanthus
Multispine damselfish - Neoglyphidodon polyacanthus
View fullsize Bluespot butterflyfish - Chaetodon plebeius
Bluespot butterflyfish - Chaetodon plebeius
View fullsize Bluebarred parrotfish - Scarus ghobban
Bluebarred parrotfish - Scarus ghobban
View fullsize Blackback butterflyfish - Chaetodon melannotus
Blackback butterflyfish - Chaetodon melannotus
View fullsize Trevally - Pseudocaranx sp "dentex"
Trevally - Pseudocaranx sp "dentex"
View fullsize Convict surgeonfish - Acanthurus triostegus
Convict surgeonfish - Acanthurus triostegus
View fullsize Bluespot butterflyfish - Chaetodon plebeius
Bluespot butterflyfish - Chaetodon plebeius
View fullsize Bluebarred parrotfish - Scarus ghobban
Bluebarred parrotfish - Scarus ghobban
View fullsize Inscribed wrasse - Notolabrus inscriptus
Inscribed wrasse - Notolabrus inscriptus
View fullsize Green moon wrasse - Thalassoma lutescens
Green moon wrasse - Thalassoma lutescens
View fullsize Threadfin butterflyfish - Chaetodon auriga
Threadfin butterflyfish - Chaetodon auriga
View fullsize Blackback butterflyfish - Chaetodon melannotus
Blackback butterflyfish - Chaetodon melannotus
View fullsize Brassy drummer - Kyphosus vaigiensis
Brassy drummer - Kyphosus vaigiensis
View fullsize Snubnose dart - Trachinotus blochii
Snubnose dart - Trachinotus blochii
View fullsize Bluespine unicornfish - Naso unicornis
Bluespine unicornfish - Naso unicornis
View fullsize Three-striped butterflyfish - Chaetodon tricinctus
Three-striped butterflyfish - Chaetodon tricinctus
View fullsize Dick's damsel - Plectroglyphidodon dickii
Dick's damsel - Plectroglyphidodon dickii
View fullsize Wartylip mullet - Crenimugil crenilabis
Wartylip mullet - Crenimugil crenilabis
View fullsize Spotted sawtail - Prionurus maculatus
Spotted sawtail - Prionurus maculatus
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Featured
Poop power
Jun 17, 2025
Poop power
Jun 17, 2025

Not all poop on a reef is bad poop. In fact some kinds of poop can be a reef’s most important invisible engine. Fish poop, bird poop – even poop that gets eaten again by other fish – all of it keeps the ecosystem ticking over in a way that’s nothing short of extraordinary.

Jun 17, 2025
Glimpses of recovery: what the reef could be if we let it
Jun 13, 2025
Glimpses of recovery: what the reef could be if we let it
Jun 13, 2025

Day 6 of this photo series from Norfolk Island coincides with the final day of the UN Ocean Conference in Nice. After a week of documenting decline, today’s post offers a different view – what reef recovery can look like when conditions improve. Drought in 2024 gave the reef a break, and the results were unmistakable: healthier corals, lower disease, and more fish. This is what’s possible if we act.

Jun 13, 2025
Warning signs: quiet and unnoticed collapse of two coral colonies
Jun 12, 2025
Warning signs: quiet and unnoticed collapse of two coral colonies
Jun 12, 2025

Day 5 of my blog series for the UN Ocean Conference: two long-lived coral colonies in Norfolk’s lagoon died quietly from disease. No drama – just slow collapse and overgrowth by algae. A reminder that not all reef losses are loud, but they are happening.

Jun 12, 2025
Warning signs:  what Norfolk Island’s reef is telling us
Jun 11, 2025
Warning signs: what Norfolk Island’s reef is telling us
Jun 11, 2025

Day 4 of a week-long photo series from Norfolk Island, shared during the UN Ocean Conference in Nice. Today’s post spotlights a Hydnophora pilosa colony where white syndrome appeared suddenly and spread quickly, taking out around a quarter of the coral. In the months that followed, algae quietly filled the gap – a subtle but telling shift from coral to algae that’s happening across the reef.

Jun 11, 2025
Warning signs: coral disease takes hold
Jun 10, 2025
Warning signs: coral disease takes hold
Jun 10, 2025

In Day 3 of this blog post series, published while leaders gather at the UN Ocean Conference in Nice, we see Norfolk Island’s coral reef lagoon quietly delivering a stark warning: recurrent land-based pollution, coral disease, and delayed decisions are dismantling this ecosystem in real time.

Jun 10, 2025
Warning signs: coral growth anomalies – the slow cancers of the reef
Jun 9, 2025
Warning signs: coral growth anomalies – the slow cancers of the reef
Jun 9, 2025

Day 2’s post coinciding with the UN Ocean Conference looks at coral growth anomalies – sometimes called coral ‘cancers’. These slow-moving diseases quietly weaken coral colonies, making them far more vulnerable to storm damage and algal takeover. On Norfolk Island’s reef, I’ve watched this exact process play out over several years. This is how chronic stress silently dismantles coral ecosystems.

Jun 9, 2025
Warning signs: shifting baselines on Norfolk Island’s reef
Jun 8, 2025
Warning signs: shifting baselines on Norfolk Island’s reef
Jun 8, 2025

Today is World Ocean Day — a timely moment to launch my week-long blog series on Norfolk Island’s reef. Each day this week, I’ll be sharing photo essays that document the slow but steady pressures reshaping this fragile reef. Today: how shifting baselines make us blind to what we’ve already lost.

Jun 8, 2025
The Governance–Government Vacuum: Norfolk Island’s Forgotten Ecology
Apr 29, 2025
The Governance–Government Vacuum: Norfolk Island’s Forgotten Ecology
Apr 29, 2025

A personal reflection on Norfolk Island’s coral reef environment, political denial, and what John Wyndham’s The Kraken Wakes can still teach us about slow-moving disasters — and why this election matters more than ever.

Apr 29, 2025
Cute as buttons – Astrea curta
Feb 20, 2025
Cute as buttons – Astrea curta
Feb 20, 2025

Astrea curta corals are ‘small, moderately plocoid [flattened], distinct, and almost circular’ . Normally grey-green in colour, you can see from the images here, ours are often beautiful rich gold, although they do vary. They have a neat growth habit and button-like corallites, which can grow in columns, spherically or flattened. Large colonies of these can form gorgeous undulating bumps.

Feb 20, 2025
From 'Watch' to 'Warning'
Jan 26, 2025
From 'Watch' to 'Warning'
Jan 26, 2025

Last week, the chance of coral bleaching in Norfolk Island’s inshore lagoons was raised from ‘Watch’ to ‘Warning’ and will more than likely rise to Alert levels one and two in coming weeks. So why do I worry about water quality all the time when bleaching seems inevitable these days and so the reef is probably doomed anyway? Read on to find out.

Jan 26, 2025

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