{"id":23410,"date":"2022-11-25T15:32:42","date_gmt":"2022-11-25T20:32:42","guid":{"rendered":"https:\/\/world.dan.org\/?post_type=dan_alert_diver&#038;p=23410"},"modified":"2023-01-30T12:56:48","modified_gmt":"2023-01-30T17:56:48","slug":"snapping-turtles","status":"publish","type":"dan_alert_diver","link":"https:\/\/world.dan.org\/fr\/alert-diver\/article\/snapping-turtles\/","title":{"rendered":"Tortues serpentines"},"content":{"rendered":"<p class=\"has-medium-font-size\"><strong><span style=\"color: #005274;\" class=\"stk-highlight\">LES ANC\u00caTRES DES TORTUES DE MER MODERNES<\/span><\/strong>&nbsp;shared the oceans with ichthyosaurs and plesiosaurs during the late Jurassic period 150 million years ago. Their descendants now inhabit reefs and oceans around the world. All seven species of sea turtles \u2014 the flatback, green, hawksbill, leatherback, loggerhead, Kemp\u2019s ridley, and olive ridley sea turtles \u2014 are listed as endangered or threatened under the Endangered Species Act.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>Like their land-based relatives, they evolved to have their bony outer shells. The top is known as the carapace, and the underside,\u00a0which is generally lighter in color, is the plastron. Scutes \u2014 large, scalelike plates made of keratin, the same substance as human fingernails and horse hooves \u2014 cover both bone layers. The leatherback is the only exception, having a leathery skin over its more flexible carapace.<\/p>\n\n\n\n<p>Depending on where you dive, one species will be more common than others. In my backyard in Hawai\u2018i you can encounter 100 to 200 green sea turtles for every hawksbill turtle. In the Philippines you typically have an even chance of seeing one or the other. People in some areas of Indonesia still eat sea turtles despite their endangered status and prohibitions against consuming them. Recognizing you as a predator, your photographic subject can make it challenging to get close enough to capture an image of a turtle in these areas. Around the island of Sipadan in Malaysia, however, sea turtles come to mate and have enjoyed protected status for many years. Scuba divers also converge here, and the turtles are used to their presence.<\/p>\n\n\n\n<p class=\"has-small-font-size\"><span style=\"color: #005274;\" class=\"stk-highlight\"><em>A diver swims near a green sea turtle (Chelonia mydas) in Kauai, Hawai\u2018i. DAVID FLEETHAM<\/em><\/span><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/q4_20_phototech.jpeg\" alt=\"\" class=\"wp-image-23418\" width=\"461\" height=\"566\" srcset=\"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/q4_20_phototech.jpeg 293w, https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/q4_20_phototech-10x12.jpeg 10w\" sizes=\"auto, (max-width: 461px) 100vw, 461px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_24_phototech.jpeg\" alt=\"\" class=\"wp-image-23419\" width=\"462\" height=\"325\" srcset=\"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_24_phototech.jpeg 409w, https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_24_phototech-360x253.jpeg 360w, https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_24_phototech-18x12.jpeg 18w\" sizes=\"auto, (max-width: 462px) 100vw, 462px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>Other good locations to photograph turtles include Costa Rica, the Bahamas, Florida, Australia, Mexico, and Egypt. Whether you\u2019re staying at a resort or on a liveaboard, ask your guides for dive sites with frequent turtle encounters. Protection laws vary from country to country, so be sure to inquire at your destination for specific rules. Regardless, be respectful of these wild animals, and avoid any interactions that cause stress. Even when photography is your purpose, take a moment to take away your mask from your camera to observe and appreciate these magnificent creatures.<\/p>\n\n\n\n<p class=\"has-small-font-size\"><span style=\"color: #005274;\" class=\"stk-highlight\"><em>Une tortue de mer verte glisse sous un banc de carangues au large de Bali, en Indon\u00e9sie. DAVID FLEETHAM<\/em><\/span><\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>Sea turtles of all species are independent characters with individual peculiarities you will need to determine to make the most of a photographic opportunity. If a turtle 50 feet away lifts off the reef and swims away from you, take a deep breath, exhale, and look for another subject. This one is not your turtle, and even if you try, you won\u2019t catch a turtle that does not want to be caught. Although relatively slow for sea creatures, most turtles can swim faster and further than humans.<\/p>\n\n\n\n<p>If a turtle does not swim away, approach it slowly, and stop about 10 feet away. If at any point it begins to rise with a push from its front fins, stop and wait for it to settle back down. Even though you\u2019ll be too far away for your strobes to have any effect, take a shot or two, and look for a reaction. If it doesn\u2019t react, this is your turtle. Inch your way closer, frequently stopping to hit the shutter and check on your subject.<\/p>\n\n\n\n<p class=\"has-small-font-size\"><span style=\"color: #005274;\" class=\"stk-highlight\"><em>This green sea turtle glides below surf instructor Tara Angioletti on a stand-up paddleboard off Canoe Bearch, Maui. Hawai\u2018i.&nbsp;&nbsp;<br>DAVID FLEETHAM<\/em><\/span><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_23_phototech.jpeg\" alt=\"\" class=\"wp-image-23420\" width=\"462\" height=\"483\" srcset=\"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_23_phototech.jpeg 324w, https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_23_phototech-11x12.jpeg 11w\" sizes=\"auto, (max-width: 462px) 100vw, 462px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_21_phototech.jpeg\" alt=\"\" class=\"wp-image-23421\" width=\"460\" height=\"329\" srcset=\"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_21_phototech.jpeg 403w, https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_21_phototech-360x257.jpeg 360w, https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_21_phototech-18x12.jpeg 18w\" sizes=\"auto, (max-width: 460px) 100vw, 460px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>Certaines tortues seront curieuses au point de mettre leur nez sur le hublot de votre d\u00f4me pour examiner leur \u00e9trange reflet d\u00e9form\u00e9 qui les regarde. Les \u00e9clairs r\u00e9p\u00e9t\u00e9s de vos flashs finiront par affecter une tortue qui tente de se reposer, alors soyez indulgent en limitant le nombre de photos que vous prenez et en n'appuyant sur la g\u00e2chette que lorsque vous avez obtenu l'angle d\u00e9sir\u00e9.<\/p>\n\n\n\n<p>All turtles will eventually swim toward the surface for a breath of air or along the reef. The time between breaths varies with their activity. They will surface every few minutes when feeding but can stay up to two hours underwater while resting. If they swim up, don\u2019t block their passage. If they have put up with you so far, you can likely swim beside them and snap pictures as you go. Time the tempo of their front flippers to get the appropriate angle. If your subject is willing, keep pushing your shutter release. It is surprising how different turtles can look depending on the position of their fins and the angle of the image. Generally, looking back from slightly ahead of your subject is the most desirable angle.<\/p>\n\n\n\n<p class=\"has-small-font-size\"><span style=\"color: #005274;\" class=\"stk-highlight\"><em>Une tortue de mer verte remonte \u00e0 la surface pour respirer au large de Maui. DAVID FLEETHAM<\/em><\/span><\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"580\" src=\"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_phototech-1000x580-1.jpeg\" alt=\"\" class=\"wp-image-23422\" srcset=\"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_phototech-1000x580-1.jpeg 1000w, https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_phototech-1000x580-1-360x209.jpeg 360w, https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_phototech-1000x580-1-768x445.jpeg 768w, https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/alert-diver-q4-2022_phototech-1000x580-1-18x10.jpeg 18w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\"><span style=\"color: #005274;\" class=\"stk-highlight\">Ces trois tortues vertes, Chelonia mydas, une esp\u00e8ce en voie de disparition, se sont retir\u00e9es sur une petite plage \u00e0 22 heures. Cette longue exposition montre des \u00e9toiles dans le ciel et des vagues floues qui s'\u00e9chouent sur le rivage. Le ciel est bleu en raison d'une lune brillante, Hawa\u00ef.<\/span><\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p>Si les tortues font surface, attendez en dessous et observez-les. Les tortues sont parfaitement conscientes de leur vuln\u00e9rabilit\u00e9 \u00e0 la pr\u00e9dation lorsqu'elles sont \u00e0 la surface, et peu d'entre elles supporteront la pr\u00e9sence d'un photographe. Entre deux respirations, les tortues remettent la t\u00eate dans l'eau et regardent vers le bas pour v\u00e9rifier qu'il n'y a pas de danger autour d'elles. Les tortues connaissent bien leur r\u00e9cif d'origine et reviendront souvent \u00e0 l'endroit o\u00f9 vous les avez vues pour la premi\u00e8re fois.<\/p>\n\n\n\n<p>An upward angle of a swimming turtle will allow you to get a bluewater background, but be careful with your strobe\u2019s power setting. A turtle\u2019s underside can be very reflective. When you are below a turtle, consider turning off your strobes and shooting a silhouette. Increase your shutter speed, and maneuver yourself so the turtle is eclipsing the sun. The faster shutter speed can produce wonderful beams of light, and you can push the shutter over and over or even switch to a drive setting since you don\u2019t have to wait for the strobe to recycle. It is surprising how much light can change in a split second.<\/p>\n\n\n\n<p>Si votre tortue se prom\u00e8ne sur le r\u00e9cif, essayez de capturer une image de sa carapace sup\u00e9rieure depuis le dessus. Les angles vers le bas sont g\u00e9n\u00e9ralement mal vus dans le milieu de la photographie sous-marine, mais avec le bon coup de stroboscope, vous pouvez obtenir une photo m\u00e9morable. Les coquilles varient en fonction de leur \u00e9tat de propret\u00e9, et celles qui sont immacul\u00e9es sont spectaculaires.<\/p>\n\n\n\n<p>Une femelle parcourt des centaines, voire des milliers de kilom\u00e8tres jusqu'\u00e0 la plage o\u00f9 elle est n\u00e9e, et les m\u00e2les suivent les femelles pour s'accoupler avant que la m\u00e8re ne d\u00e9pose les \u0153ufs dans un trou qu'elle creuse dans le sable. Au cours de ces voyages en haute mer, les carapaces peuvent se couvrir d'algues et m\u00eame de bernacles. On peut parfois voir des tortues frotter leurs plastrons sur du corail, des gravats ou un fond de sable pour les nettoyer.<\/p>\n\n\n\n<p>Pour obtenir une carapace intacte, les tortues se rendent dans les stations de nettoyage du r\u00e9cif, o\u00f9 les poissons-chirurgiens, les labres et les poissons-papillons grignotent les excroissances qui se sont accumul\u00e9es. Les stations de nettoyage peuvent offrir des opportunit\u00e9s photographiques \u00e9tonnantes. Vous pouvez parfois trouver des dizaines de tortues qui se pr\u00eatent au jeu des photographes soufflant des bulles d'air. Les bancs de poissons qui nettoient les tortues sont cependant moins accueillants. Une fois de plus, la patience est de mise. Trouvez la distance \u00e0 laquelle les nettoyeurs n'abandonnent pas leur t\u00e2che.<\/p>\n\n\n\n<p>C'est souvent le bruit de l'expiration qui est \u00e0 l'origine de la perturbation, donc si vous essayez de vous rapprocher, vous pouvez retenir bri\u00e8vement votre respiration (en vous assurant que vous ne montez pas dans l'air). Approchez-vous, prenez vos photos, puis reculez jusqu'\u00e0 une distance s\u00fbre avant de respirer. Attendez de reprendre votre souffle, puis recommencez. Un recycleur est id\u00e9al pour ces situations.<\/p>\n\n\n\n<p>Lorsque des groupes de tortues se rassemblent, il y a souvent un ou deux fauteurs de troubles. Je les ai vues remonter \u00e0 la surface pour respirer un peu et revenir \u00e0 l'endroit qu'elles avaient quitt\u00e9 pour d\u00e9couvrir qu'une autre tortue y avait \u00e9lu domicile. Certaines tortues prennent cela \u00e0 la l\u00e9g\u00e8re et cherchent un autre endroit, mais d'autres font conna\u00eetre leur m\u00e9contentement en se posant sur l'intrus et m\u00eame en lui mordant les nageoires pour r\u00e9cup\u00e9rer la place qu'elles convoitent sur le r\u00e9cif. En cas de conflit, les tortues ignorent souvent le photographe.<\/p>\n\n\n\n<p>Les tortues sont souvent tellement concentr\u00e9es sur la t\u00e2che de se nourrir qu'il est possible de les rencontrer de plus pr\u00e8s. Soyez attentif \u00e0 leur attitude lorsque vous vous approchez, et prenez votre temps pour qu'elles aient confiance en vos intentions. Les tortues imbriqu\u00e9es qui se nourrissent sont de merveilleux sujets d'images et encore plus de vid\u00e9os. Ils d\u00e9placent souvent les rochers et le corail pour atteindre la bonne \u00e9ponge, ce qui vous permet de les voir croquer leur repas \u00e0 l'aide de leur cou extr\u00eamement long et de leur bec qui ressemble \u00e0 celui d'un oiseau. Les tortues de mer vertes, quant \u00e0 elles, ont une bouche moins pro\u00e9minente et une m\u00e2choire dentel\u00e9e pour leur r\u00e9gime herbivore.<\/p>\n\n\n\n<p>There is no wrong lens for photographing sea turtles, but a wide-angle zoom lens is most photographers\u2019 go-to choice. In many locations it is happenstance to encounter a turtle, so you can make it work with whatever lens you have. I have shot turtle face portraits with a 100mm macro lens and used a full-frame fisheye lens to capture reef scenes that include a turtle. A fisheye lens tends to distort the turtle the closer you get, so pay attention to your composition when using one.<\/p>\n\n\n\n<p>Sea turtles are beautiful subjects. They continue to navigate an environment that\u2019s increasingly threatened by changes to our planet. Risks to their populations include loss of habitat, fishery bycatch, plastic waste, and illegal trade in their eggs, meat, and shells. Treat them respectfully, and they will deliver exceptional images to delight you and your audience.<\/p>\n\n\n\n<p>Avec vos photos, vous pouvez partager l'histoire de ces fascinants marins de l'Antiquit\u00e9 et de leur voyage de survie. J.-C.<\/p>\n\n\n\n<p>\u00a9&nbsp;<em>Alert Diver<\/em>&nbsp;- Q4 2022<\/p>","protected":false},"excerpt":{"rendered":"<p>LES ANCESTAIRES DES TORTUES DE MER MODERNES ont partag\u00e9 les oc\u00e9ans avec les ichtyosaures et les pl\u00e9siosaures \u00e0 la fin du Jurassique, il y a 150 millions d'ann\u00e9es. Leurs descendants peuplent aujourd'hui les r\u00e9cifs et les oc\u00e9ans du monde entier.<\/p>","protected":false},"featured_media":23416,"template":"","dan_alert_diver_categories":[67],"dan_alert_diver_issues":[482],"class_list":["post-23410","dan_alert_diver","type-dan_alert_diver","status-publish","has-post-thumbnail","hentry","dan_alert_diver_categories-imaging","dan_alert_diver_issues-q4-2022"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Snapping Turtles - DAN World<\/title>\n<meta name=\"description\" content=\"THE ANCESTORS OF MODERN SEA TURTLES\u00a0shared the oceans with ichthyosaurs and plesiosaurs during the late Jurassic period 150 million years ago.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/world.dan.org\/fr\/alert-diver\/article\/snapping-turtles\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Snapping Turtles\" \/>\n<meta property=\"og:description\" content=\"THE ANCESTORS OF MODERN SEA TURTLES\u00a0shared the oceans with ichthyosaurs and plesiosaurs during the late Jurassic period 150 million years ago.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/world.dan.org\/fr\/alert-diver\/article\/snapping-turtles\/\" \/>\n<meta property=\"og:site_name\" content=\"DAN World\" \/>\n<meta property=\"article:modified_time\" content=\"2023-01-30T17:56:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/world.dan.org\/wp-content\/uploads\/2022\/11\/q4_19_phototech.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"704\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:description\" content=\"THE ANCESTORS OF MODERN SEA TURTLES\u00a0shared the oceans with ichthyosaurs and plesiosaurs during the late Jurassic period 150 million years ago.\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"9 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/world.dan.org\\\/alert-diver\\\/article\\\/snapping-turtles\\\/\",\"url\":\"https:\\\/\\\/world.dan.org\\\/alert-diver\\\/article\\\/snapping-turtles\\\/\",\"name\":\"Snapping Turtles - 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