Giant Trevally Welcome New Caledonia
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全景摄影师 Richard Chesher PRO EXPERT MAESTRO 日期和时间 05:18, 24/02/2012 - Views loading...

Giant Trevally Welcome New Caledonia

世界 > Pacific Ocean Islands > Melanesia > 新喀里多尼亚

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Giant Trevally, Caranx ignobilis, are big, smart, curious fish. Freddy and I nick-named this one Posei (short for Poseidon). He (a male according to his black dorsal colouring) is attracted to Freddy for two reasons.

First, Posei knows us. Giant Trevally are territorial and patrol their domains daily. This one lives in the mini-lagoon of Ilot Mato in New Caledonia and we have seen him here for many years and, of course, he has seen us snorkelling along the reefs in his domain. He likes to hang out just under our yacht, too. He knows we don't spear fish or even catch them on hook and line. Divers who enter the water with spear guns will never see Posei (we hope). I once tested this hypothesis by entering the water with a pole (a boat hook) and Posei, who was just under the yacht before I got in, was nowhere to be seen for two days.

Second, when I took this photo both Freddy and I were wearing our new zebra striped leotards. We don't look like "frogmen" and the strong contrasting pattern changes our apparent motions so the reef fish, including Posei, are less afraid of us. The first day we wore the leotards on the reef we noticed that there were more fish than we normally saw in the same areas and they allowed us to come closer than ever before. It's not camouflage - maybe just the opposite. Lion fish, sea snakes and other "dangerous" sea creatures often adopt a reverse camouflage. These vividly striped creatures are also slow moving - like us. The suits protect us from stinging medusa (even fire coral), sunburn, and are one tenth the cost of a nice French Bikini.

We have used suits similar to these for years and they proved to be effective in frightening off sharks. The old suits had straight stripes and they were broader. The new suits with their wavy narrower stripes had a completely different effect on the reef sharks. Initially they took off as desired but then they came back, looked us over very carefully, and then stuck around. I was able to get closer to them then ever before - great for photography, not so great when 5 sharks at the same time take an interest in you.

Posei has been close to us while we were snorkelling many times over the years but when ever I turned my camera towards him I'd only get a photo of him swimming away. This time he stuck around and posed for me, sometimes swimming within inches of the fisheye lens. In this image Posei and Freddy are the same distance (about 2 metres) away from the camera and you can judge the size of the fish pretty well. Freddy is 1.5 metres from head to toe (not counting the flippers) so from the photo I estimate Posei to be about 1.2 metres long. The largest recorded specimen of Caranx ignobilis was 1.7 metres long and weighed 80kg so Posei is big even for his species.

I worry about Posei because fishermen consider GT to be one of the best "sport" fish around. Here in New Caledonia tag-and release is now the norm for professional fishing guides and for fishing contests but a really big fish is often kept as a "trophy" during tournaments. Even worse are the spearfishers - just about every snorkelling male human here is an avid spearfisher and one look at Posei and they would be after him. I often see the spearfishers (both commercial and for "fun") hunting in packs, encircling patch reefs or swimming from different directions along the reef to trap unwary fish between them. With their high powered spear guns and metre-long flippers these guys are deadly.

However, large specimens of GT are often ciquatoxic and most fishermen and divers know they can be poisonous - so they are not caught or killed for food - just for fun. 

Posei's big eyes supposedly have special high density retinal cells that "see" a panoramic image so they can detect the slightest movements. That plus the fact that Posei has already survived for many years in the lagoon at Mato where lots of weekend spearfishers have stripped the reefs of larger fish, gives Freddy and I some hope that Posei might be there to welcome us next time we return to Ilot Mato.

  • Richard Chesher 17 days ago
    I did not use a pole - I hand-held the camera at arm's length upside down and swivelled with my flippers. Bit tricky but it worked OK - I've done this many times, the trick is to line up something on the bottom with the camera to keep it in one place. And have the camera automatically taking images every second while doing at least two rotations.
  • Frank Taylor over 1 year ago
    So if a pole scares Posei away, how did you take this 360?
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    在附近的图片新喀里多尼亚

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    此全景拍摄于新喀里多尼亚

    这是一个概述新喀里多尼亚

    新喀里多尼亚是离澳大利亚和新西兰最近的南太平洋岛屿。该岛是法国领地且官方语言是法语,尽管如此,其文化却丰富多彩,揉合了美拉尼西亚、欧洲、波利尼西亚、越南、中国、印尼等国的风情。这里有一个多山的大岛,称为大地岛 (Grande Terre),和6个较小的岛屿——洛亚蒂三岛 (Loyalty Islands)、贝莱普群岛 (Belep) 和松树岛 (Isle of Pines)。

    整个群岛人口极为稀少,有大片的荒野。这里有数百公里长的徒步小径、随处可见的露营营地、超过42个公园和保护区、清澈透明的河流和莹莹闪光的瀑布。约三分之一的人口居住在首府努美阿。镍的开采是该国最主要的工业,也是维持其高标准生活的主要经济来源。大地岛四周环绕着世界第二大珊瑚礁,此珊瑚礁形成的泻湖是世界上最大的,也是受保护的泻湖。该泻湖于2008年被列为世界遗产,面积达24000平方公里,是品种丰富的鱼类和无脊椎动物栖息之地。

    对于刚上岛的游客而言,最引人注目的是这里鲜艳夺目的色彩。努美阿以其完备的酒店、度假酒店、餐馆设施和丰富多彩的活动欢迎游客的到来。

    分享这个全景图