‘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.
Cemetery Bay, Norfolk Island, at low tide
Readers of this website may be familiar with my Facebook page, Norfolk Island Time, on which I cross post my blog posts about Norfolk Island's marine life. I can no longer gain access to that page. It’s been taken over by a random person hell bent on getting a free lunch. But worse is that this particular scam has been doing the rounds for years while Facebook offers little assistance. We should be angry.
Read MoreNorfolk Island’s inshore reef during low tide and at sunrise
Sadly, the year didn’t bring any obvious improvements to Norfolk Island's reef in terms of reductions in incidences of coral disease, or runaway algal growth. And while some fish seem to have departed the scene, another species has re-established its home. Here’s a rundown of what I've been doing during the last four years of observations, and what I've seen happening on our reef in 2023.
Read MoreI couldn’t resist posting these beautiful images of floating seaweed. Enjoy!
Read MoreAcropora coral, Norfolk Island, 14_StairwayReef, 14 November 2021
For two years, I have stopped by and photographed this beautiful Acropora coral formation in Emily Bay on Norfolk Island. In my database for this colony, I called the folder 14_StairwayReef; 14 for the geographic location on a map, followed by my romantic name for it. Today it is just so much rubble.
Read MoreWhite syndrome on a Hynophora pilosa colony, Norfolk Island, 23 November 2023
A pictorial study of the spread of white syndrome, over time, in a Hynophora pilosa colony on Norfolk Island. This beautiful coral colony is in the middle of the channel that runs between the contiguous Emily and Slaughter Bays, in Norfolk Island’s inshore coral reef lagoon. It’s one of my favourite places to pause and admire the scenery, when I’m out on my swim.
Read MoreThe surf breaking over Norfolk Island’s reef, Slaughter Bay
Can Norfolk Island claim the Southern Hemisphere’s oldest surf lifesaving club? Read on to find out more!
Read MoreThe marine algae Hydroclathrus clathratus, Norfolk Island
It’s common, wide spread around the globe, and yet I have only noticed it in recent weeks. It has been hiding in plain sight, yet this spongey algal blob, Hydroclathrus clathratus, is edible, and has been found to possess some remarkable medicinal properties. Read on to find out more!
Read MoreA bubble-tip anemone, Norfolk Island
A close relative of corals and jellyfish, sea anemones are soft-bodied animals that ensnare passing prey with their stinging tentacles. No one really knows how long they can live, but in the wild they are thought to live for more than a hundred years. They have some clever adaptations that contribute to their longevity. Maybe they can teach us their secrets for a long life!
Read MoreAcropora corals, Norfolk Island’s reef
Norfolk Island’s reef is one of Australia’s most southerly. It isn’t showy like the Great Barrier Reef, and I often hear the comment that it is a little dowdy – boring and brown. I’m here to tell you that it is anything but.
For this little photo essay I randomly selected just a handful of my many ‘boring, brown’ coral images to demonstrate my point. I barely scratched the surface of my photo library, yet I think you will agree, the diversity is just amazing!
Read MoreA Norfolk Island endemic species, the Norfolk Island blenny, Parablennius serratolineatus
After about 18 months of asking, and with the help of some wonderful people from the data department of the Atlas of Living Australia and the Australian Museum, the Atlas of Living Australia website now recognises iNaturalist citizen science observations for Norfolk Island. Which is definitely something worth celebrating!
Read MoreOld Military Barracks after heavy rain, November 2020
Three years ago, on 31 July 2020, we woke after a night of torrential rain to a scene of devastation in Emily Bay on Norfolk Island. Arguably one of the most beautiful bays in the world was a fetid, smelly mess caused by the raw sewage that had flowed from the poorly maintained sewerage works and private septic tanks, down the hill and into the bay. Read on to find out what has happened since that dreadful day.
Read MoreEmily Bay, full moon rising, by Norfolk Island photographer Joelene Oliver
With the low, low tides associated with a full moon, the bays on Norfolk Island are like a huge, calm swimming pool, giving us some great snorkelling opportunities. These low tides should also let us view the causeway, which will no doubt be exposed too. This post explores these opportunities as well as what the low tides mean for corals. Read more in this fact packed blog post.
Read MoreA small school of scissortail sergeants with one interloper, an Indo-Pacific sergeant, Norfolk Island
There are a few fish species in Norfolk Island’s bays that are easily mixed up. Here’s four commonly confused pairs, with a few pointers to help you identify them.
Read MorePurple velvet sea star, Leiaster leachii, as it broadcasts spawn into the water column, Norfolk Island
In May on Norfolk Island, the day after the full moon and at low tide, I witnessed an enormous Leach’s sea star, Leiaster leachi, as it broadcast its gametes into the water column. What an amazing WOW moment! And what a privilege to witness such a rare event. Here are some images and video of the action.
Read MoreClose-up of the underside of the acropora coral colony after being toppled in a storm
On Norfolk Island’s reef, acropora coral colonies upturned in storm surges in September 2020 initially struggled to survive, but now they are now showing signs of new, healthy growth. This incredible photo is of those early days as it struggled. You can read more and see what it looks like today in my latest blog post, here.
Read MoreCrustose coralline algae, Norfolk Island
Animal, vegetable or mineral? What are crustose coralline algae? Are they important? What role do they play on our coral reefs?
There’s a lot to learn about coralline algae. For a humble lifeform, they really pack a punch.
Read MoreMy grandson
What will my grandson see when he is old enough to snorkel on Norfolk Island’s reef? Will there be anything left as I know it? Or will he think it is all great because of that hoary old phenomenon called ‘shifting baseline syndrome’? This record of all my photos and observations will give him some idea of what we had in our bays in the 2020s.
Read MoreBlack Blenny, Enchelyurus ater found in Slaughter Bay, Norfolk Island
This is a copy of the Australian Fishes journal post about new fish sightings on Norfolk Island: ‘This observation [of a black blenny] highlights the power of citizen scientists working with professional ichthyologists to achieve important outcomes,’ Mark McGrouther, Senior Fellow at the Australian Museum.
Read MoreDoris, a week after she was taken into rehab
Many of the turtles that live in Norfolk Island’s coral-reef lagoons are juveniles. In other words, they are the future of their species, and an important piece in the genetic jigsaw. Yet they seem to fall through the cracks when it comes to being protected by the EPBC Act.
Read MoreOne of the pair of ‘sometimes’ resident snubnose darts, Norfolk Island
Norfolk Island’s reef is small and intimate. We can count the numbers of some species of fish on one hand, and that is how I can watch the comings and goings with interest as I swim among them. I love the stories that play out and which I get to witness – these snubnose darts (Trachinotus blochii) are a case in point.
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