{"id":4888,"date":"2015-06-16T00:00:00","date_gmt":"2015-06-16T00:00:00","guid":{"rendered":"http:\/\/www-prod.greenpeace.org\/usa\/sei-whales\/"},"modified":"2024-11-20T10:55:55","modified_gmt":"2024-11-20T10:55:55","slug":"sei-whales","status":"publish","type":"page","link":"https:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/","title":{"rendered":"Sei Whales"},"content":{"rendered":"

Balaenoptera borealis<\/span>
Sei whales are some of the fastest swimmers of the whale community. They’re currently endangered, mainly because they were a target of commercial whalers in the 1950s and 1960s. <\/span><\/p>\n

Sei whale mother and calf seen from the air
Sei whale mother and calf seen from the air. \u00a9 Christin Khan, NOAA \/ NEFSC. Creative Commons. <\/figcaption><\/figure>\n

Estimated Population:<\/strong>\u00a0Unknown,\u00a0endangered.<\/p>\n

Ways to identify this species:<\/strong> slim and streamlined, bluish grey body with a white underside.<\/p>\n

Sei Whale Biology<\/h2>\n
    \n
  • Sei whales are migratory and feed in Arctic waters during\u00a0the summer and subtropical waters during the winter, where they\u00a0remain mainly offshore.<\/li>\n<\/ul>\n
      \n
    • Sei whales are the third largest baleen whales. Adult males measure up to 55 feet and weigh up to 25 tons. Females are usually a bit larger.<\/li>\n<\/ul>\n
        \n
      • Sei whales\u00a0are one of the fastest swimming cetaceans and can reach speeds of 31 mph.<\/li>\n<\/ul>\n
          \n
        • An average sei whale eats about 1,984 pounds of food each day, eating mostly small fish and other organisms.<\/li>\n<\/ul>\n

          Threats to Sei Whales<\/h2>\n
            \n
          • After fin and blue whale populations were exhausted, Sei whales became the target of whalers in the 1950s and 1960s and the population was severely depleted.<\/li>\n<\/ul>\n
              \n
            • Today, sei whales\u00a0still face threats from hunting and entanglement in nets.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

              Balaenoptera borealisSei whales are some of the fastest swimmers of the whale community. They’re currently endangered, mainly because they were a target of commercial whalers in the 1950s and 1960s. Sei whale mother and calf seen from the air. \u00a9 Christin Khan, NOAA \/ NEFSC. Creative Commons. Estimated Population:\u00a0Unknown,\u00a0endangered. Ways to identify this species: slim […]<\/p>\n","protected":false},"author":77,"featured_media":5857,"parent":4886,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"ep_exclude_from_search":false,"p4_hide_page_title_checkbox":"","p4_title":"","p4_subtitle":"","p4_description":"","background_image_id":"","background_image":"","p4_button_title":"","p4_button_link":"","p4_button_link_checkbox":"","p4_og_title":"","p4_og_description":"","p4_og_image":"","p4_og_image_id":"","p4_seo_canonical_url":"","p4_campaign_name":"","p4_local_project":"","p4_basket_name":"","p4_department":"","footnotes":""},"categories":[223],"tags":[],"class_list":["post-4888","page","type-page","status-publish","has-post-thumbnail","hentry","category-oceans"],"yoast_head":"\nSei Whales - Greenpeace<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sei Whales\" \/>\n<meta property=\"og:description\" content=\"Balaenoptera borealisSei whales are some of the fastest swimmers of the whale community. They’re currently endangered, mainly because they were a target of commercial whalers in the 1950s and 1960s. Sei whale mother and calf seen from the air. \u00a9 Christin Khan, NOAA \/ NEFSC. Creative Commons. Estimated Population:\u00a0Unknown,\u00a0endangered. Ways to identify this species: slim […]\" \/>\n<meta property=\"og:url\" content=\"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/\" \/>\n<meta property=\"og:site_name\" content=\"Greenpeace\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/greenpeaceusa\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-20T10:55:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/c87e191c-sei-whales.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@greenpeaceusa\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/\",\"url\":\"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/\",\"name\":\"Sei Whales - Greenpeace\",\"isPartOf\":{\"@id\":\"https:\/\/www.greenpeace.org\/usa\/#website\"},\"primaryImageOfPage\":{\"@id\":\"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/#primaryimage\"},\"image\":{\"@id\":\"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/c87e191c-sei-whales.jpg\",\"datePublished\":\"2015-06-16T00:00:00+00:00\",\"dateModified\":\"2024-11-20T10:55:55+00:00\",\"breadcrumb\":{\"@id\":\"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/#primaryimage\",\"url\":\"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/c87e191c-sei-whales.jpg\",\"contentUrl\":\"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/c87e191c-sei-whales.jpg\",\"width\":600,\"height\":400},{\"@type\":\"BreadcrumbList\",\"@id\":\"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.greenpeace.org\/usa\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Protect the oceans\",\"item\":\"http:\/\/www.greenpeace.org\/usa\/oceans\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Save the Whales\",\"item\":\"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Sei Whales\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.greenpeace.org\/usa\/#website\",\"url\":\"https:\/\/www.greenpeace.org\/usa\/\",\"name\":\"Greenpeace USA\",\"description\":\"Greenpeace\",\"publisher\":{\"@id\":\"https:\/\/www.greenpeace.org\/usa\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.greenpeace.org\/usa\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.greenpeace.org\/usa\/#organization\",\"name\":\"Greenpeace USA\",\"url\":\"https:\/\/www.greenpeace.org\/usa\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.greenpeace.org\/usa\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/cd951b96-greenpeace-logo-1.png\",\"contentUrl\":\"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/cd951b96-greenpeace-logo-1.png\",\"width\":299,\"height\":51,\"caption\":\"Greenpeace USA\"},\"image\":{\"@id\":\"https:\/\/www.greenpeace.org\/usa\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/greenpeaceusa\",\"https:\/\/x.com\/greenpeaceusa\",\"https:\/\/www.instagram.com\/greenpeaceusa\/\"],\"description\":\"Greenpeace USA is committed to transforming the country\u2019s unjust social, environmental, and economic systems from the ground up to address the climate crisis, safeguard our planet for future generations, advance racial justice, and build an economy that puts people over profits.\",\"email\":\"connect@greenpeace.us\",\"telephone\":\"1-800-722-6995\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Sei Whales - Greenpeace","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/","og_locale":"en_US","og_type":"article","og_title":"Sei Whales","og_description":"Balaenoptera borealisSei whales are some of the fastest swimmers of the whale community. They’re currently endangered, mainly because they were a target of commercial whalers in the 1950s and 1960s. Sei whale mother and calf seen from the air. \u00a9 Christin Khan, NOAA \/ NEFSC. Creative Commons. Estimated Population:\u00a0Unknown,\u00a0endangered. Ways to identify this species: slim […]","og_url":"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/","og_site_name":"Greenpeace","article_publisher":"https:\/\/www.facebook.com\/greenpeaceusa","article_modified_time":"2024-11-20T10:55:55+00:00","og_image":[{"width":600,"height":400,"url":"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/c87e191c-sei-whales.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_site":"@greenpeaceusa","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/","url":"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/","name":"Sei Whales - Greenpeace","isPartOf":{"@id":"https:\/\/www.greenpeace.org\/usa\/#website"},"primaryImageOfPage":{"@id":"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/#primaryimage"},"image":{"@id":"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/#primaryimage"},"thumbnailUrl":"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/c87e191c-sei-whales.jpg","datePublished":"2015-06-16T00:00:00+00:00","dateModified":"2024-11-20T10:55:55+00:00","breadcrumb":{"@id":"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/#primaryimage","url":"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/c87e191c-sei-whales.jpg","contentUrl":"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/c87e191c-sei-whales.jpg","width":600,"height":400},{"@type":"BreadcrumbList","@id":"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/sei-whales\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.greenpeace.org\/usa\/"},{"@type":"ListItem","position":2,"name":"Protect the oceans","item":"http:\/\/www.greenpeace.org\/usa\/oceans\/"},{"@type":"ListItem","position":3,"name":"Save the Whales","item":"http:\/\/www.greenpeace.org\/usa\/oceans\/save-the-whales\/"},{"@type":"ListItem","position":4,"name":"Sei Whales"}]},{"@type":"WebSite","@id":"https:\/\/www.greenpeace.org\/usa\/#website","url":"https:\/\/www.greenpeace.org\/usa\/","name":"Greenpeace USA","description":"Greenpeace","publisher":{"@id":"https:\/\/www.greenpeace.org\/usa\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.greenpeace.org\/usa\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.greenpeace.org\/usa\/#organization","name":"Greenpeace USA","url":"https:\/\/www.greenpeace.org\/usa\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.greenpeace.org\/usa\/#\/schema\/logo\/image\/","url":"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/cd951b96-greenpeace-logo-1.png","contentUrl":"https:\/\/www.greenpeace.org\/static\/planet4-usa-stateless\/2024\/11\/cd951b96-greenpeace-logo-1.png","width":299,"height":51,"caption":"Greenpeace USA"},"image":{"@id":"https:\/\/www.greenpeace.org\/usa\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/greenpeaceusa","https:\/\/x.com\/greenpeaceusa","https:\/\/www.instagram.com\/greenpeaceusa\/"],"description":"Greenpeace USA is committed to transforming the country\u2019s unjust social, environmental, and economic systems from the ground up to address the climate crisis, safeguard our planet for future generations, advance racial justice, and build an economy that puts people over profits.","email":"connect@greenpeace.us","telephone":"1-800-722-6995"}]}},"_links":{"self":[{"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/pages\/4888","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/users\/77"}],"replies":[{"embeddable":true,"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/comments?post=4888"}],"version-history":[{"count":1,"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/pages\/4888\/revisions"}],"predecessor-version":[{"id":9920,"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/pages\/4888\/revisions\/9920"}],"up":[{"embeddable":true,"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/pages\/4886"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/media\/5857"}],"wp:attachment":[{"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/media?parent=4888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/categories?post=4888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.greenpeace.org\/usa\/wp-json\/wp\/v2\/tags?post=4888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}