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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
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    • Octopuses
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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.

Susan's flatworm, Pseudoceros susanae, Norfolk Island

Susan's flatworm and the wisdom of sharing knowledge

January 22, 2024

[This post follows my mournful one from yesterday when I describe the hacking of my Facebook account by some evil random who wants a free lunch at another’s expense.]

I went #outonaswim yesterday afternoon, as I so often do. Camera at the ready, watching, observing recording. As I pottered around, something caught my eye. A piece of plastic? It was that same vivid blue of a milk bottle top, but the wrong shape and with a broader orange and narrower white stripe. Blue and orange – direct opposites on the colour wheel; it would make a striking livery for a football team or national flag!

I returned home, downloaded the images and found out its identity. I was overjoyed to discover that this critter is a Susan’s flatworm (Pseudoceros susanae). My namesake! What are the chances? Surely, with all the hassles I’d been having with identity theft and fraud on my Facebook page, this was a positive sign.

Anyway, it transpires that Ms Susan Flatworm was previously only seen in the Indian Ocean and Indonesian waters until it was first recorded on Norfolk Island in early 2021 by John Turnbull. John was on-island with the Reef Life Survey volunteers. Yesterday is the first time I’ve seen it, in five years of trawling back and forth along the length of the reef! It just goes to show how much we don’t yet know about our tiny reef as new things get discovered all the time.

It got me thinking. In the normal way of things I would be so excited by my find that I’d want – no, have – to share it immediately with the world. But I can’t. Remember – some dude has compromised my Facebook and Instagram pages, for that read taken control of them, while I am left helpless and out of the communication loop. A tricky thing for someone who breathes all things comms, all day!

Susan's flatworm, Pseudoceros susanae, Norfolk Island

I don’t want to start a new Facebook page just yet and create a world of confusion, so I’ve dutifully reported the hack and I wait. The conversation is rather one-sided, though. The silence from Facebook is deafening. Samuel Beckett’s play Waiting for Godot comes to mind. Of course, we all know Godot never comes!

I realised then that sharing knowledge is a fundamental aspect of human interaction that enriches both the giver and the receiver. Sharing and documenting knowledge ensures that valuable information and experiences are not lost but are instead preserved for future generations.

Knowledge, in and of itself, is of no worth if not shared. For me, it is like watching the idea-ripples caused by a small pebble-fact thrown into a pond. If people know and love something, they will want to save it. If they understand something, they can formulate an idea of how to save it.

Before I could share some of my knowledge (which still isn’t a whole lot, just lots of observations) I had to realise that I know nothing whatsoever about the marine environment. I started with a zero sum. As Socrates said, ‘True wisdom comes to each of us when we realise how little we understand about life, ourselves, and the world around us’.

Which is why I ask the questions, and share the answers. Hopefully some of them are right. Hopefully someone takes an interest.

I share, because it is in my DNA.

Maybe I will start a new Facebook page. I’m not sure when, but it will come.

Tags Knowledge, sharing, marine enviroment, philosophy, Facebook, hacker, hacked, flatworms
← Combine bacteria, fungi, and maybe a sponge = one toxic messFacebook fiasco – and the fishes →
Featured
Glimpses of recovery: what the reef could be if we let it
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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.

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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.

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Warning signs:  what Norfolk Island’s reef is telling us
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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.

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Warning signs: coral disease takes hold
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Warning signs: coral disease takes hold
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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.

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Warning signs: coral growth anomalies – the slow cancers of the reef
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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.

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Warning signs: shifting baselines on Norfolk Island’s reef
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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.

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The Governance–Government Vacuum: Norfolk Island’s Forgotten Ecology
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Cute as buttons – Astrea curta
Feb 20, 2025
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From 'Watch' to 'Warning'
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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.

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