Readers’ wildlife photos

June 30, 2016 • 8:40 am

Reader Joe Dickinson sends us rarities: underwater photos of reef fish. His notes are indented:

About a year and a half ago I sent a batch of photos, mostly under water, from French Polynesia.  We returned  recently just to Moorea for a week of binge snorkeling (with some other activities thrown in when I became too waterlogged).  Here is an initial set of the results.  I’ll send more over the next week or two as I get them edited and identified.

First, we can set the scene with a shot approaching Moorea by Ferry, with the surrounding reef indicated by a line of surf.

Moorea01
 Then a view from the deck of our “bungalow” from which we could descend directly into the lagoon (note the ladder from the similar neighboring unit at the far left):
Moorea02
Now to the fish.  The blue lined surgeonfish (Acanthurus lineatus) was, to the best of my aging memory, a new species for me.
Moorea03
A dash-dot goatfish (Parupeneus basrberinus).

Moorea04

A school of convict surgeonfish (Acanthurus triostegus).
Moorea05
Ornate butterflyfish (Chaetodon ornastissimus).

Moorea06

Bullethead parrotfish (Chlorurus sordidus).
Moorea07
Those last two species together.
Moorea08
Saddle butterflyfish (Chaetodon ephippium).
Moorea09
An old favorite from my introduction to snorkeling while on sabbatical in Hawaii (studying Hawaiian Drosophila, by the way), the Moorish idol (Zanclus cornutrus).
Moorea11
The aptly named Picasso triggerfish (rhinecanthus aculeatus).
Moorea13
And finally, for this set, a very brave bluestreak cleaner wrasse (Labroides dimidiatus) completely inside the mouth of a giant moray eel (Gymnothorax javanicus).  Not the sharpest photo I’ve ever taken, but I’m still proud of it.
Moorea15

32 thoughts on “Readers’ wildlife photos

  1. Amazing photos! I’d be interested in knowing what kind of camera was used for the underwater shots.

    1. It’s a fairly inexpensive waterproof point-and-shoot, the Power Shot D20 by Canon. The secret is to fire away, then do some thoughtful selection once you have them up on your desktop.

    1. Me too – it looks glorious. I want to be there right now…

      Apropos: I went on a pretty miserable, tense, argumentative family holiday to Tobago when I was fifteen or so, but amidst all the bad tempers and passive aggression I got given a mask and shown how to snorkel in water just off the hotel’s own beach, and I have never forgotten how extraordinary that was. It was head-spinningly beautiful.
      And it felt almost like cheating; that a world as sensual and vivid and colorful could be accessed so easily by a mediocre swimmer with a cheap mask! When you’re there it’s just overwhelming. One of my ambitions is to some day go snorkelling in waters like that again. These photos have really stirred me up.

      1. That’s the wonderful thing about snorkeling or just diving with a mask in the right place: it can actually be much more beautiful than scuba diving. Below a certain depth, the vivid colors are washed out and dominated by blues…

        1. Yes, that was my feeling – I’ve never been scuba diving but snorkelling felt so wonderful I’ve never wanted to either. And I’m more interested in resolution, contrast, depth of colour and frame rate than I am in the ability to watch in 3D if you see what I mean.

      2. Hear, hear, Saul, same for me in Turkish waters when I was about 35: it is like discovering another world and the nearest us medium-achievers will get to space-travel.

        OT: btw. sitting aghast at twitter and fb as Corbyn breaks the Labour Party. Thank goodness for Wimbledon and Joe’s photos. They’re the only things which are cheering me up.

        1. What a horror show of a week eh? At least the Tories seem even more intent on destroying themselves.

          Last thing I read was that Corbyn was actually keen to go but was being held back by his more strident hard-left supporters/pimps. I’ve no idea how much truth there is in that.
          It’s not a pretty picture is it? but if ever there was an opportunity for Labour it’s now – 48% of the country have no-one fighting their side. I don’t know which way you voted but my feeling is that it’s incredibly complacent for the Tories to talk as though this was a landslide. Half the country is angry, frustrated and a great deal more united, in my opinion, than the other side – and at the moment the 48% are living in what amounts to a one party state.
          Our one remaining just-about-credible centre-left party surely can’t afford to keep faith in a man who seems to openly disdain the idea of democratic compromise, a man who seems to regard gaining actual political power in the same way other people regard getting caught wanking in a disabled toilet. Never mind his cabal of followers at the top, who are prepared to cede the next ten years of government to the Tories in the hallucinatory belief that this will foment some kind of left-wing populist uprising…in 2026. This hard-left experiment has been a hideous disaster, but until now it’s been in everybody’s interests to just drift along – Corbyn listing, his opponents sitting on their hands biding their time. After last Thursday however it’s crucial that Corbyn goes as quickly as possible and they begin the process of returning to opposition. Listening to people like Cameron and Anna Soubry talk over the last few days has been telling – even some Conservatives are concerned about Labour’s uselessness.

          Re. snorkelling: you’re right, it really is like another planet…and you don’t need a rocket, two years of physical training and degrees in astrophysics and engineering to get there. That’s part of what was so attractive about it – you just inhale, balloon yourself out and float on the surface, blotting out the sun for shoal after shoal of twinkling, shimmering fish. It’s one of those things that you want to tell your friends about and drag them with you to experience it too.

          Anyway, keep your chin up. I can’t actually think of any reasons why you should, but that’s what they say in these circumstances…

          1. I agree with most of that Saul but let’s not hijack Joe’s moment in the sun, or rather, under the sea.

            More of these pics, if you can, Joe: a whole swathe of miserable middle-aged Englanders are looking to you to cheer us up!

          2. Fair enough. I’ve been posting a fair few apocalyptic screeds over the last week and it’s difficult to not let it all pour out.

            I second your plea for more photos: more of these would be very welcome.

  2. As the name indicates, the cleaner wrasse is removing parasites and dead tissue in a mutually beneficial relationship with the moray eel.

    I’ve also seen cleaner shrimp in the mouths and gills of groupers performing a similar function. The grouper would literally line up at “cleaner stations” on the reef, waiting to be serviced.

  3. A newbie question…

    Why are these reef fishes so gaudily colored? They just seem to be, um, designed to amaze and delight us hoomins.

    1. I am not an expert, but I can offer some educated guesses based on things I have heard about here and there. The colors and patterns emerge from a combination of factors.
      First, like many animals they use color patterns to communicate identity, so to help mediate territories and solicitations for sex. Second, the intensely contrasting patterns are rather necessary to compensate for being underwater. Under natural light down there, everything is seen as shades of blue and they need a lot of contrast to get their communication across. Third, the bright colors, under flash photography, is somewhat of an accident. The fish themselves probably cannot see these colors since it is underwater. But the colors are from the pigments that animals tend to have at their disposal.

      1. But why is it so typically associated with tropical reef fish? If color identification were a product of low-light underwater conditions, wouldn’t it be a feature of all fish in all environments? In any case, the following site suggests that many fish species have color vision superior to humans: https://www.quora.com/Why-are-tropical-fish-so-colorful

  4. Man, I want to be in that bungalow right now…

    Nice pics. To a one, all of these fish can be seen on several Hawaiian islands, with at most minor variations in pattern and color. (I also have tons of pics taken with an iPhone in an underwater casing – works great if you’re brave enough to risk it…). Not sure if the varieties are identical, but I’d be interested to know how the fish can be so similar 2600 miles away. Do these little fish somehow traverse the open ocean and keep the the gene pool stirred? Anyone know?

    1. “I’d be interested to know how the fish can be so similar 2600 miles away.”

      I’ve wondered about that myself. I have not dived in the western Pacific, but from my experience diving in various parts of the tropical world I’ve noticed differences. In the Caribbean the species tend to be much the same on all the reefs. There must be lots of gene flow.
      Hawaii has pretty much a different set of species, Galapagos similar to Hawaii but much of interest happens to be palagics which of course travel easily. I once dove in the Indian ocean off S. Africa, which looked quite different again, especially the coral and sponges which appeared strange to my eyes.
      My guess is that the farther apart geographically, the more differences – which implies there is some gene flow (travel) but there are constraints.

    2. At the very least, the Moorish Idol and Picasso Parrotfish are common on the Tanzania coast.
      My guess is that the larvae get swept around in the oceanic circulation and when they get to somewhere of an appropriate environment when they’re at an appropriate age, when they settle and become all territorial. If it’s good enough for the coelacanths in the Indian Ocean (remember the two species, Indonesian and Comoran), then I don’t see why it wouldn’t be good enough for a Moorish Picasso Idle Parrotfish.

  5. Underwater pictures are always my favourite. These are wonderful!

    I’ve been to New Caledonia twice and once to Vanuatu and got in plenty of snorkeling. I’d dearly love to do it again. It’s one of the best experiences ever!

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