Nos últimos dias as águas que cercam a costa noroeste da Tasmânia têm apresentado um fenómeno brilhante. Vários fotografias tiradas no Preservation Bay e no Rocky Cape, mostram as águas com pontos de luz azul fluorescente quando o céu está escuro. Estas águas, segundo explica o The Guardian, são águas bioluminiscentes e as suas luzes devem-se a um fenómeno conhecido como o noctiluca scintillans, ou brilho do mar.
Tudo isto acontece quando o pequeniníssimos plânctons se tornam azul, num mecanismo de autodefesa. Mas, segundo Anthony Richardson, isto é um mau presságio: “As exposições são um sinal de que existem mudanças climáticas”, afirmou o cientista, já depois de ter estudado o fenómeno em 2015.
As pessoas estão deslumbradas e existem já nas redes sociais muitas reações, ainda que o evento não seja um bom sinal.
#bioluminescence has been making a big 'splash' on the North West Coast over the last few days! ????#rockycape #discovertasmania #cradlecoasttasmania #instatasmania #tasmania #tasmaniagram #tassiegram #fujifilm_xseries #fujifilmxt10 #aussiephotos #thisistassie #SeeAustralia #Australia_shotz #tassiepics #ig_discover_australia #tasmaniasnorthernexposure #tassieshots
Uma publicação partilhada por Leanne Marshall (@leannemarshall) a Mar 14, 2017 às 1:18 PDT
Splash!! #bioluminescence at #rockycape last night ????#discovertasmania #cradlecoasttasmania #instatasmania #tasmania #tasmaniagram #tassiegram #fujifilm_xseries #fujifilmxt10 #aussiephotos #thisistassie #SeeAustralia #Australia_shotz #tassiepics #ig_discover_australia #tasmaniasnorthernexposure #tassieshots
Uma publicação partilhada por Leanne Marshall (@leannemarshall) a Mar 14, 2017 às 4:01 PDT
Uma publicação partilhada por Leanne Marshall (@leannemarshall) a Mar 13, 2017 às 12:35 PDT
One of the most unbelievable things to witness with your own eyes. Storm clouds made an awesome back drop as well. Bioluminesence made an appearance close to home and it's the first time I can recall it happening in my region. #tasmaniasnorthwest #seeaustralia #tasmania #instatassie #ig_australia #ig_discover_australia #exploreaustralia #nikon #nikon_photography #tasmania #bioluminescence
Uma publicação partilhada por Brett Chatwin (@brett.chatwin) a Mar 12, 2017 às 9:50 PDT
Bioluminescence usually occurs when a living organism emits light such as phytoplanktons. These tiny organisms - around 0.5 mm in size - activate a protein known as luciferase when triggered by tidal waves, leading to a chain of chemical reactions that emit the blue glow. Have you ever experienced this? By @mcplt . #coolmariners #marinerslounge #sealife #sea #sailor #ship #merchantmarine #sail #seaman #sailorlife #merchantnavy #seaman #seamen #lifeonship #maritime #nautical #shiplife #shipping #instaship #instasea #instashipping #lifeatsea #navigation #anchor #oow #sailorlove #seafarer #seagirl #shipspotting #natgeo #bioluminescence
Uma publicação partilhada por ⚓️Cool Merchant Mariners⚓️ (@coolmariners) a Mar 10, 2017 às 4:17 PST
????Photo taken by :@hootan7 Bioluminescence" بیولومینسانس تولید و نشر نور، در اثر انجام یک واکنش شیمیایی- آنزیمی، از موجودات زنده است و بر خلاف واکنشهای زیستی معمول، که انرژی به صورت گرما به محیط داده میشود، انرژی این واکنش به انرژی نورانی مبدل میشود. بیولومینسانس در موجودات مختلف با اشکال ظاهری متنوع و با مکانیسمهای مختلف انجام میشود. برخی جانوران اندامهای نورانی پیچیدهای که مانند چشم است دارند، در این جانوران انتشار نور تحت کنترل سیستم ع��بی است و نور بر اساس نیاز یا باتحریک عصبی آزاد میشود. از جمله این جانوران پلانکتون ها ماهی منور و اقتاپوسهای نور افشان است. در برخی دیگر یک سلول منفرد همهی دستگاههای مورد نیاز برای نشر نور را دارد و نور به طور ممتد نشر میشود ( باکتریها و قارچهای منور از این دسته هستند ). بسیاری از گروههای دیگر موجودات لومینسانس حد واسط این دو گروه اند. Bioluminescence is the production and emission of light by a living organism. It is a form of chemiluminescence. Bioluminescence occurs widely in marinevertebrates and invertebrates, as well as in some fungi, microorganisms including somebioluminescent bacteria and terrestrial invertebrates such as fireflies. In some animals, the light is produced by symbioticorganisms such as Vibrio bacteria. #iloveqeshm #larak #iran #qeshmisland #qeshm #Bioluminescence
Uma publicação partilhada por دوستداران جزیره زیبای قشم (@iloveqeshm) a Mar 10, 2017 às 7:58 PST
How could you not get in the ocean when you get a pretty welcome home from some rare bioluminescence plankton and a pod of dolphins ???????? it was worth the sandy feet and salty wet dress for the rest of the wedding ☺️ #bioluminescence #plankton #earthisamazing #protectouroceans
Uma publicação partilhada por Bianca Dunham (@beedunham) a Mar 12, 2017 às 12:25 PST
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