{"id":18607,"date":"2023-08-10T08:06:57","date_gmt":"2023-08-10T08:06:57","guid":{"rendered":"https:\/\/grandgo.com\/28-faits-fascinants-sur-locean-atlantique-explorer-le-vaste-royaume-bleu-de-la-terre\/"},"modified":"2026-05-06T12:35:14","modified_gmt":"2026-05-06T12:35:14","slug":"28-faits-fascinants-sur-locean-atlantique-explorer-le-vaste-royaume-bleu-de-la-terre","status":"publish","type":"post","link":"https:\/\/grandgo.com\/fr\/28-faits-fascinants-sur-locean-atlantique-explorer-le-vaste-royaume-bleu-de-la-terre\/","title":{"rendered":"28 faits sur l&rsquo;Oc\u00e9an Atlantique 2026 : guide francophone du second oc\u00e9an"},"content":{"rendered":"\n<div class=\"wp-block-group grandgo-quickanswer has-background\" style=\"border-color:#e8b86f;border-width:1px;border-radius:8px;background-color:#fffaf0;padding:1.25rem\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h2 class=\"wp-block-heading\">R\u00e9ponse rapide<\/h2>\n<p>L&rsquo;<strong>Oc\u00e9an Atlantique<\/strong> est le <strong>deuxi\u00e8me oc\u00e9an le plus grand<\/strong> du monde (apr\u00e8s le Pacifique) : 106 millions de km\u00b2, 20% de la surface terrestre. Profondeur moyenne : <strong>3 646 m<\/strong>. Point le plus profond : <strong>Fosse de Porto Rico 8 376 m<\/strong>. S&rsquo;\u00e9tend de l&rsquo;<strong>Arctique \u00e0 l&rsquo;Antarctique<\/strong>. Divis\u00e9 en <strong>Atlantique Nord et Sud<\/strong> \u00e0 l&rsquo;\u00e9quateur. Pour francophones : la <strong>France a 4 853 km de c\u00f4te atlantique<\/strong> (de la Manche aux Pyr\u00e9n\u00e9es), avec Bretagne, Vend\u00e9e, Aquitaine. Jacques Cartier (1534-1542) d\u00e9couvrit le Saint-Laurent. La <strong>Corrente du Golfe<\/strong> r\u00e9chauffe l&rsquo;Europe de 5-10\u00b0C. <strong>4 oc\u00e9ans<\/strong> au total (plus Antarctique reconnu 2000) : Pacifique, Atlantique, Indien, Antarctique. Article bonus : 28 faits pour passionn\u00e9s de g\u00e9ographie marine.<\/p><\/div><\/div>\n\n\n<!-- grandgo-inbody-image -->\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1440\" src=\"https:\/\/grandgo.com\/wp-content\/uploads\/2023\/08\/28-facts-about-atlantic-ocean-1.jpg\" alt=\"28 faits sur l'Oc\u00e9an Atlantique 2026 : guide francophone du second oc\u00e9an\" class=\"wp-image-18449\" srcset=\"https:\/\/grandgo.com\/wp-content\/uploads\/2023\/08\/28-facts-about-atlantic-ocean-1.jpg 1920w, https:\/\/grandgo.com\/wp-content\/uploads\/2023\/08\/28-facts-about-atlantic-ocean-1-1067x800.jpg 1067w, https:\/\/grandgo.com\/wp-content\/uploads\/2023\/08\/28-facts-about-atlantic-ocean-1-768x576.jpg 768w, https:\/\/grandgo.com\/wp-content\/uploads\/2023\/08\/28-facts-about-atlantic-ocean-1-1536x1152.jpg 1536w, https:\/\/grandgo.com\/wp-content\/uploads\/2023\/08\/28-facts-about-atlantic-ocean-1-860x645.jpg 860w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><figcaption class=\"wp-element-caption\">28 faits sur l&rsquo;Oc\u00e9an Atlantique 2026 : guide francophone du second oc\u00e9an<\/figcaption><\/figure>\n\n<h2 class=\"wp-block-heading\">Dimensions et g\u00e9ographie<\/h2>\n<ol class=\"wp-block-list\"><li><strong>Surface :<\/strong> 106,5 millions de km\u00b2 (20% de la surface terrestre).<\/li><li><strong>Volume :<\/strong> 310 millions de km\u00b3.<\/li><li><strong>Profondeur moyenne :<\/strong> 3 646 m.<\/li><li><strong>Profondeur maximale :<\/strong> Fosse de Porto Rico 8 376 m.<\/li><li><strong>Longueur :<\/strong> environ 14 500 km du nord au sud.<\/li><li><strong>Largeur :<\/strong> 2 848 km au point le plus \u00e9troit (Br\u00e9sil-Liberia).<\/li><li><strong>Fronti\u00e8res :<\/strong> Am\u00e9riques \u00e0 l&rsquo;ouest, Europe\/Afrique \u00e0 l&rsquo;est, Arctique au nord, Antarctique au sud.<\/li><\/ol>\n<h2 class=\"wp-block-heading\">Caract\u00e9ristiques physiques<\/h2>\n<ol class=\"wp-block-list\" start=\"8\"><li><strong>Salinit\u00e9 :<\/strong> moyenne 35 g\/L (plus sal\u00e9 que le Pacifique).<\/li><li><strong>Temp\u00e9rature :<\/strong> de -2\u00b0C (p\u00f4les) \u00e0 30\u00b0C (\u00e9quateur).<\/li><li><strong>Mar\u00e9es :<\/strong> les plus amples au monde dans la Baie de Fundy (Canada) \u2014 16 m de d\u00e9nivellation.<\/li><li><strong>Courants majeurs :<\/strong> Courant du Golfe (r\u00e9chauffe l&rsquo;Europe), Courant du Br\u00e9sil, Courant de Benguela, Courant des Canaries.<\/li><li><strong>Mer des Sargasses :<\/strong> seule mer sans c\u00f4tes, d\u00e9finie par les courants, riche en algues Sargassum.<\/li><li><strong>Dorsale M\u00e9dio-Atlantique :<\/strong> cha\u00eene sous-marine de 16 000 km, o\u00f9 se forme nouvelle cro\u00fbte oc\u00e9anique.<\/li><\/ol>\n<h2 class=\"wp-block-heading\">Faune marine<\/h2>\n<ol class=\"wp-block-list\" start=\"14\"><li><strong>Grand requin blanc :<\/strong> populations atlantiques au large d&rsquo;Afrique du Sud, USA, M\u00e9diterran\u00e9e.<\/li><li><strong>Baleine franche atlantique :<\/strong> en danger critique, 400 individus restants.<\/li><li><strong>Thon rouge atlantique :<\/strong> surp\u00each\u00e9, objet d&rsquo;accords internationaux.<\/li><li><strong>Pieuvre commune :<\/strong> Octopus vulgaris en M\u00e9diterran\u00e9e (partie de l&rsquo;Atlantique).<\/li><li><strong>Manchots de Magellan :<\/strong> Atlantique sud, c\u00f4tes d&rsquo;Argentine et du Chili.<\/li><li><strong>Coraux profonds :<\/strong> Lophelia pertusa dans les profondeurs norv\u00e9giennes et celtiques.<\/li><\/ol>\n<h2 class=\"wp-block-heading\">Histoire et exploration<\/h2>\n<ol class=\"wp-block-list\" start=\"20\"><li><strong>Vikings (1000 ap. J.-C.) :<\/strong> Leif Erikson atteignit Terre-Neuve 500 ans avant Colomb.<\/li><li><strong>Christophe Colomb (1492) :<\/strong> g\u00e9nois au service de l&rsquo;Espagne. D\u00e9barquement \u00e0 San Salvador (Bahamas) 12 octobre 1492.<\/li><li><strong>Magellan (1520) :<\/strong> portugais au service de l&rsquo;Espagne, premi\u00e8re circumnavigation.<\/li><li><strong>Traite atlantique (1500-1888) :<\/strong> 12 millions d&rsquo;Africains transport\u00e9s \u00e0 travers l&rsquo;Atlantique vers les Am\u00e9riques \u2014 &lsquo;Middle Passage&rsquo;.<\/li><li><strong>C\u00e2bles t\u00e9l\u00e9graphiques (1858) :<\/strong> premier c\u00e2ble transatlantique Irlande-Terre-Neuve.<\/li><\/ol>\n<h2 class=\"wp-block-heading\">Pour francophones : France atlantique<\/h2>\n<ol class=\"wp-block-list\" start=\"25\"><li><strong>4 853 km de c\u00f4te atlantique fran\u00e7aise :<\/strong> de la Manche (Calais, Le Havre) aux Pyr\u00e9n\u00e9es (Hendaye). Bretagne (2 470 km de c\u00f4te rocheuse), Vend\u00e9e, Aquitaine, Pays Basque.<\/li><li><strong>Jacques Cartier (1491-1557) :<\/strong> Saint-Malo. 1534 d\u00e9couvrit le Saint-Laurent. Pris possession du Canada pour la France au nom de Fran\u00e7ois Ier.<\/li><li><strong>Bayard fameux ports :<\/strong> Saint-Malo, Brest, Lorient, La Rochelle, Bordeaux, Bayonne. Histoire militaire et commerciale.<\/li><li><strong>Naufrages fran\u00e7ais c\u00e9l\u00e8bres :<\/strong> La Boussole et l&rsquo;Astrolabe (Lap\u00e9rouse, 1788), L&rsquo;Empress of Ireland (1914), Le Surcouf (1942).<\/li><\/ol>\n\n<h2 class=\"wp-block-heading\">Questions fr\u00e9quemment pos\u00e9es<\/h2>\n<h3 class=\"wp-block-heading\">Quelle taille a l&rsquo;Oc\u00e9an Atlantique ?<\/h3>\n<p>L&rsquo;Atlantique mesure 106,5 millions de km\u00b2 (20% de la surface terrestre), volume 310 millions de km\u00b3. Deuxi\u00e8me par taille apr\u00e8s le Pacifique (165 millions de km\u00b2).<\/p>\n<h3 class=\"wp-block-heading\">Quel est le point le plus profond de l&rsquo;Atlantique ?<\/h3>\n<p>La Fosse de Porto Rico aux Cara\u00efbes, 8 376 m. Profondeur moyenne 3 646 m. Moins profond que la Fosse des Mariannes dans le Pacifique (10 984 m).<\/p>\n<h3 class=\"wp-block-heading\">Quels Fran\u00e7ais ont explor\u00e9 l&rsquo;Atlantique ?<\/h3>\n<p>Jacques Cartier (Saint-Malo, 1534, d\u00e9couverte du Saint-Laurent), Champlain (Qu\u00e9bec 1608), La Salle (descente du Mississippi 1682), Bougainville (premier tour du monde fran\u00e7ais 1766-1769), Lap\u00e9rouse (exp\u00e9dition tragique 1788).<\/p>\n<h3 class=\"wp-block-heading\">Qu&rsquo;est-ce que la Courant du Golfe ?<\/h3>\n<p>Courant oc\u00e9anique chaud qui part du Golfe du Mexique et traverse l&rsquo;Atlantique vers l&rsquo;Europe. R\u00e9chauffe l&rsquo;Europe de 5-10\u00b0C \u2014 Londres aurait climat de Moscou sans elle. Importante pour p\u00eache et faune marine.<\/p>\n<h3 class=\"wp-block-heading\">Combien de c\u00f4te atlantique a la France ?<\/h3>\n<p>4 853 km de c\u00f4te atlantique de la Manche aux Pyr\u00e9n\u00e9es. Bretagne (2 470 km de c\u00f4te rocheuse), Vend\u00e9e, Aquitaine, Pays Basque. La Manche est partie de l&rsquo;Atlantique Nord.<\/p>\n<h3 class=\"wp-block-heading\">Combien y a-t-il d&rsquo;oc\u00e9ans ?<\/h3>\n<p>Cinq officiellement depuis 2000 : Pacifique, Atlantique, Indien, Antarctique (Austral), Arctique. L&rsquo;Antarctique a \u00e9t\u00e9 reconnu en 2000 par l&rsquo;OHI. Avant, on parlait de 4 oc\u00e9ans.<\/p>\n\n<script type=\"application\/ld+json\">\n{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Quelle taille a l'Oc\u00e9an Atlantique ?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"L'Atlantique mesure 106,5 millions de km\u00b2 (20% de la surface terrestre), volume 310 millions de km\u00b3. Deuxi\u00e8me par taille apr\u00e8s le Pacifique (165 millions de km\u00b2).\"}}, {\"@type\": \"Question\", \"name\": \"Quel est le point le plus profond de l'Atlantique ?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"La Fosse de Porto Rico aux Cara\u00efbes, 8 376 m. Profondeur moyenne 3 646 m. 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Avant, on parlait de 4 oc\u00e9ans.\"}}]}\n<\/script>\n\n\n\n<!-- grandgo-amazon-block -->\n\n<div class=\"wp-block-group has-background\" style=\"border:1px solid #ff9900;border-radius:8px;background:#fff8ef;padding:1.25rem\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\">Recommand\u00e9 sur Amazon<\/h3>\n<p><small>grandgo.com est partenaire d&rsquo;Amazon et per\u00e7oit une commission sur les achats \u00e9ligibles.<\/small><\/p>\n<ul class=\"wp-block-list\">\n<li><a rel=\"nofollow sponsored noopener\" target=\"_blank\" href=\"https:\/\/amazon.co.uk\/s?k=atlas+geographique+oceans&amp;tag=grandgouk-21\"><strong>Atlas g\u00e9ographique des oc\u00e9ans<\/strong><\/a> \u2014 en fran\u00e7ais.<\/li>\n<li><a rel=\"nofollow sponsored noopener\" target=\"_blank\" href=\"https:\/\/amazon.co.uk\/s?k=histoire+explorations+atlantiques&amp;tag=grandgouk-21\"><strong>Histoire explorations atlantiques<\/strong><\/a> \u2014 livre.<\/li>\n<li><a rel=\"nofollow sponsored noopener\" target=\"_blank\" href=\"https:\/\/amazon.co.uk\/s?k=documentaires+ocean+atlantique&amp;tag=grandgouk-21\"><strong>Documentaires oc\u00e9an Atlantique<\/strong><\/a> \u2014 en fran\u00e7ais.<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<!-- grandgo-see-also -->\n<h3 class=\"wp-block-heading\">\u00c0 voir aussi<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/grandgo.com\/28-fascinating-facts-about-the-atlantic-ocean\/\">Atlantic facts (English)<\/a><\/li>\n<\/ul>\n\n\n<div class=\"wp-block-group grandgo-author-review has-background\" style=\"border-color:#dddddd;border-width:1px;border-radius:8px;background-color:#fafafa;padding:1.25rem\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p><small><strong>Derni\u00e8re r\u00e9vision :<\/strong> avril 2026<br><strong>Auteur :<\/strong> Kir Rud, r\u00e9daction Grandgo<br><strong>Sources consult\u00e9es :<\/strong> autorit\u00e9s touristiques officielles, publications gouvernementales sur la sant\u00e9 et le droit, ouvrages de voyage de r\u00e9f\u00e9rence. Cet article est \u00e0 titre informatif; pour un conseil officiel, consultez l&rsquo;autorit\u00e9 comp\u00e9tente.<\/small><\/p>\n<\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>28 faits fascinants sur l&rsquo;Oc\u00e9an Atlantique : dimensions, profondeur, faune, histoire. Guide 2026 pour francophones avec focus France-Atlantique.<\/p>\n","protected":false},"author":1,"featured_media":18449,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"faits ocean atlantique","_yoast_wpseo_title":"28 faits Atlantique 2026 \u2014 guide FR second oc\u00e9an","_yoast_wpseo_metadesc":"28 faits fascinants sur l'Oc\u00e9an Atlantique : dimensions, profondeur, faune, histoire. Guide 2026 pour francophones avec focus France-Atlantique.","_yoast_wpseo_meta-robots-noindex":"","_yoast_wpseo_meta-robots-nofollow":"","_yoast_wpseo_canonical":"","_yoast_wpseo_opengraph-title":"","_yoast_wpseo_opengraph-description":"","_yoast_wpseo_opengraph-image":"","_yoast_wpseo_twitter-title":"","_yoast_wpseo_twitter-description":"","_yoast_wpseo_twitter-image":"","rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":{"facebook_10160285797901919_139840552873861":"","twitter_572672048_572672048":""},"rop_publish_now_history":[],"rop_publish_now_status":"pending","footnotes":""},"categories":[2005],"tags":[3866,3853,3865,3864],"class_list":{"0":"post-18607","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-destinations-fr","8":"tag-faune-marine","9":"tag-geographie","10":"tag-mer","11":"tag-ocean-atlantique"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.0 (Yoast SEO v25.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>28 faits Atlantique 2026 \u2014 guide FR second oc\u00e9an<\/title>\n<meta name=\"description\" content=\"28 faits fascinants sur l&#039;Oc\u00e9an Atlantique : dimensions, profondeur, faune, histoire. 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