{"id":21087,"date":"2026-05-09T08:55:42","date_gmt":"2026-05-09T12:55:42","guid":{"rendered":"https:\/\/www.ecoportal.net\/en\/?p=21087"},"modified":"2026-05-08T07:44:13","modified_gmt":"2026-05-08T11:44:13","slug":"a-strange-fossil-worm-discovered-frozen","status":"publish","type":"post","link":"https:\/\/www.ecoportal.net\/en\/a-strange-fossil-worm-discovered-frozen\/21087\/","title":{"rendered":"A strange \u201cfossil worm\u201d stayed frozen in the Arctic for 24,000 years until scientists brought it back to life and watched it multiply after feeding it algae"},"content":{"rendered":"<p>An odd &#8220;fossil worm&#8221; lay hidden beneath frozen Arctic ice for over 24,000 years.<\/p>\n<p>No movement. No metabolism. No sign of life at all.<\/p>\n<p>Then scientists decided to thaw it.<\/p>\n<p>Within a few hours, <strong>the &#8220;fossil worm&#8221; started to move.<\/strong><\/p>\n<p>Soon after that, it began to feed once again. Then it did something no one expected.<\/p>\n<p>It reproduced.<\/p>\n<p>Suddenly, <strong>an Ice Age creature came back to life.<\/strong><\/p>\n<p>How did the scientists manage this?<\/p>\n<p>And more importantly, what is this strange fossil worm?<\/p>\n<h2>How a frozen organism survived longer than expected<\/h2>\n<p>This particular <strong>discovery began deep in the Siberian permafrost.<\/strong><\/p>\n<p>Researchers drilled into ancient layers of ice frozen for thousands of years.<\/p>\n<p>Inside one sample, they found something unexpected. A microscopic organism perfectly preserved.<\/p>\n<p>Radiocarbon dating revealed the creature&#8217;s age.<\/p>\n<p>Between 23,000 and 24,000 years old. Meaning it <strong>likely lived alongside woolly mammoths.<\/strong><\/p>\n<p>Then it vanished into the ice for millennia.<\/p>\n<p>At first, it showed no signs of life at all.<\/p>\n<p>No life. No movement.<\/p>\n<p>But the organism had not died\u2014it had paused.<\/p>\n<p>It was just waiting.<\/p>\n<p>Some<strong> organisms can enter extreme survival states<\/strong> of existence.<\/p>\n<p>So how did the researchers finally thaw it out?<\/p>\n<p>And what did it reveal to science?<\/p>\n<h2>What did the scientists observe once the organism came back to life<\/h2>\n<p>Deep underground, hidden forms of life are waiting patiently.<\/p>\n<p><a href=\"https:\/\/www.ecoportal.net\/en\/lake-in-kyrgyzstan-hides-many-societies\/20659\/\">Some trapped under ice.<\/a> Others <strong>trapped by isolated habitats.<\/strong><\/p>\n<p>This revival process was a slow and controlled one. The permafrost sample was placed in a nutrient-rich environment.<\/p>\n<p>All the researchers could do was wait at that point.<\/p>\n<p>Minutes passed. Then hours.<\/p>\n<p>Suddenly, the &#8220;fossil worm&#8221; came back to life. <strong>And it didn&#8217;t just start moving.<\/strong><\/p>\n<p>Its body restarted as if no time had passed.<\/p>\n<p>It soon began acting like modern organisms.<\/p>\n<p><strong>Feeding on algae in the researchers&#8217; lab.<\/strong><\/p>\n<p>Once it did that, it began to reproduce. But how, you may be asking?<\/p>\n<p>It used a process called parthenogenesis.<\/p>\n<p>Scientists had never seen anything like this before.<\/p>\n<p>A multicellular animal <strong>surviving this long in suspended animation.<\/strong><\/p>\n<p>The key to this long-held mystery was right in front of them.<\/p>\n<p>Most <a href=\"https:\/\/www.ecoportal.net\/en\/ice-age-fossils-texas-cave\/20222\/\">creatures stuck in ice die a slow and irreversible manner.<\/a><\/p>\n<p>But this one came back to life.&nbsp;<\/p>\n<p><strong>How was it able to do this?<\/strong><\/p>\n<p>The answer lay in the study, &#8220;A living bdelloid rotifer from 24,000-year-old Arctic permafrost,&#8221; published in<a href=\"https:\/\/www.cell.com\/current-biology\/fulltext\/S0960-9822%2821%2900624-2\" target=\"_blank\" rel=\"noopener\"><em> Current Biology<\/em><\/a>.<\/p>\n<h2>What this &#8220;fossil worm&#8221; actually is and how it survived for so long<\/h2>\n<p>The key to this organism&#8217;s survival lies in a process called cryptobiosis.<\/p>\n<p>When it became frozen by ice, <strong>its metabolism slowed to almost zero.<\/strong><\/p>\n<p>In this &#8220;zombie state&#8221;, the organism is neither dead nor alive.<\/p>\n<p>It is simply waiting for conditions to improve. Discovering<a href=\"https:\/\/www.ecoportal.net\/en\/creature-thought-extinct-found-in-peru\/20971\/\"> living fossils in isolated regions is now the norm.<\/a><\/p>\n<h3>A &#8220;fossil worm&#8221; with far-reaching implications for science<\/h3>\n<p>Despite being called a worm by the researchers, it certainly was not one.<\/p>\n<p><strong>It was actually a bdelliod rotifer.<\/strong><\/p>\n<p>A microscopic, multicellular animal found in freshwater environments.<\/p>\n<p>It measures no more than a millimeter long. And is invisible to the naked eye.<\/p>\n<p>But it has complex biological structures. Including a <strong>digestive system and a primitive nervous system.<\/strong><\/p>\n<p>That&#8217;s what makes this discovery so special.<\/p>\n<p>It&#8217;s not just another microbe.<\/p>\n<p>The discovery is far more than just another creature found by science.&nbsp;<\/p>\n<p>It proves that life, albeit microscopic,<strong> can survive tens of thousands of years.<\/strong><\/p>\n<p>Spotting <a href=\"https:\/\/www.ecoportal.net\/en\/expedition-discovers-strange-creatures\/20887\/\">strange creatures in isolated parts of the world<\/a> can reveal astonishing truths.<\/p>\n<p>Truths that now raise another question for science and biology to answer.<\/p>\n<p>If life can survive in harsh conditions for over 20,000 years&#8230;<\/p>\n<p><strong>What else might be hiding away?<\/strong> Just waiting for humanity to unearth it and revive its life cycle?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An odd &#8220;fossil worm&#8221; lay hidden beneath frozen Arctic ice for over 24,000 years. No movement. No metabolism. No sign of life at all. Then scientists decided to thaw it. Within a few hours, the &#8220;fossil worm&#8221; started to move. Soon after that, it began to feed once again. Then it did something no one &#8230; <a title=\"A strange \u201cfossil worm\u201d stayed frozen in the Arctic for 24,000 years until scientists brought it back to life and watched it multiply after feeding it algae\" class=\"read-more\" href=\"https:\/\/www.ecoportal.net\/en\/a-strange-fossil-worm-discovered-frozen\/21087\/\" aria-label=\"Read more about A strange \u201cfossil worm\u201d stayed frozen in the Arctic for 24,000 years until scientists brought it back to life and watched it multiply after feeding it algae\">Read more<\/a><\/p>\n","protected":false},"author":16,"featured_media":21088,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_focus_keyword":"fossil worm,arctic","rank_math_title":"","rank_math_description":"A strange \"fossil worm\" has been discovered in Siberia. It showed no signs of life until researchers thawed it out. Then, it came back to life. But how?","footnotes":""},"categories":[83],"tags":[],"class_list":["post-21087","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-earth"],"_links":{"self":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/posts\/21087","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/comments?post=21087"}],"version-history":[{"count":0,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/posts\/21087\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/media\/21088"}],"wp:attachment":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/media?parent=21087"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/categories?post=21087"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/tags?post=21087"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}