You probably think you already know the megalodon.<\/p>\n
The movies made it a monster lurking in the darkest, deepest trenches.<\/p>\n
Scientists told us the truth was almost the opposite, a coastal creature<\/strong> hunting warm shallow seas, its teeth washing up on beaches for anyone to pocket.<\/p>\n Then a robot dropped nearly 2 miles into the Pacific, and that picture became far more complicated<\/strong>.<\/p>\n If you have ever walked a North Carolina shoreline or a Florida riverbank, you know the drill.<\/p>\n You scan the sand, you spot the black triangle, and you pick it up.<\/p>\n Fossil shark teeth turn up in marine sediments and wash ashore after storms rework older deposits.<\/p>\n That familiarity bred a comfortable assumption<\/strong>.<\/p>\n If the teeth keep turning up near coastlines, the animal must have lived near coastlines.<\/p>\n Simple logic, a reasonable conclusion<\/strong>.<\/p>\n Almost certainly correct. Almost.<\/p>\n Before we get to the discovery, it helps to picture what we are actually talking about.<\/p>\n Typical large adults are estimated at around 13 to 18 meters, roughly 43 to 59 feet.<\/p>\n The largest specimens may have reached up to 24.3 meters<\/strong>, about 80 feet, longer than a bowling lane.<\/p>\n Picture a hunter that weighed more than a fully loaded truck.<\/p>\n Its jaws held around 276 teeth arranged in five rows.<\/p>\n A shark can shed tens of thousands of teeth across a lifetime, and as this animal roamed the oceans for millions of years, it kept dropping teeth that still wash up today.<\/p>\n The creature’s name literally means big tooth<\/strong> in Greek.<\/p>\n For all those millions of years of dominance, its entire known story was told through teeth found on land or close to it.<\/p>\n That was the only chapter scientists had ever read.<\/p>\n In June 2022, the research vessel E\/V Nautilus was exploring a never before surveyed seamount in the Pacific Remote Islands Marine National Monument.<\/p>\n A remotely operated vehicle descended through total darkness<\/strong>, past 1,000 feet, past 5,000, past 10,000, all the way to the ridge crest of an unnamed underwater mountain.<\/p>\n A fossilized tooth was sitting partially embedded in the ocean floor, more than 3,000 meters below the surface.<\/p>\n It was hard to spot among the rocky outcrop, but researchers watching the footage saw it sticking nearly straight up out of the sand.<\/p>\n The crew radioed up, and nobody could quite believe what they were seeing.<\/p>\n The specimen was sent to the University of Rhode Island, where processing revealed serrated edges<\/strong> hiding inside what looked like an ordinary rock sample.<\/p>\n It was only after scraping away a crust of ferromanganese that the full shape of the tooth emerged.<\/p>\n A study in the journal Historical Biology documents the first fossil megalodon tooth ever found in place in the deep sea<\/a>.<\/p>\n It was collected by the remotely operated vehicle Hercules on a seamount roughly 220 miles southeast of Johnston Atoll.<\/p>\n Nothing like it had ever been filmed resting untouched on the seabed before.<\/p>\n The tooth was preserved in its original position because it sat where currents keep sediment from burying it, yet stay too weak to sweep the fossil away.<\/p>\n In other words, it had been resting exactly where it landed, untouched, for roughly 3.6 million years<\/strong>.<\/p>\n Most fossil teeth found before this came from shallow water sediments near the shoreline, cementing the view that megalodon was a coastal species<\/strong>.<\/p>\n The authors point to megalodon teeth recorded at offshore sites across a wide range of depths, a hint the animal migrated vast distances across open ocean.<\/p>\n Studying the deep ocean floor<\/a> keeps handing scientists answers they were not expecting.<\/p>\n The megalodon vanished around 3.6 million years ago, and scientists have long argued about why.<\/p>\n Population fragmentation and competition for food with the rising great white shark are among the leading explanations.<\/p>\n But if the giant was ranging far into open water, its ecological footprint was much larger than the coastal model ever allowed.<\/p>\n A predator reaching up to 24.3 meters<\/a> crossing open ocean means extinction models built on coastal behavior alone may have been fundamentally incomplete<\/strong>.<\/p>\n The research team stresses that advanced deep diving technology is essential for surveying the largest and least explored parts of the ocean.<\/p>\n Most of that ocean floor has never been seen by human eyes, or robot ones, and other deep discoveries<\/a> suggest it still holds far more surprises.<\/p>\n What else is down there, sitting exactly where it fell, waiting for a camera to drift past?<\/p>\n The megalodon tooth is a reminder that even the most familiar giants in natural history can still hold deep secrets<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":" You probably think you already know the megalodon. The movies made it a monster lurking in the darkest, deepest trenches. Scientists told us the truth was almost the opposite, a coastal creature hunting warm shallow seas, its teeth washing up on beaches for anyone to pocket. Then a robot dropped nearly 2 miles into the Pacific, and … Read more<\/a><\/p>\n","protected":false},"author":28,"featured_media":28785,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_focus_keyword":"scientists thought megalodon","rank_math_title":"One fossil tooth sitting nearly 2 miles deep in the Pacific just moved megalodon off the coast and out into the open ocean, rewriting where the largest shark that ever lived actually hunted","rank_math_description":"A megalodon tooth found 2 miles down in the Pacific, sitting exactly where it fell millions of years ago, is rewriting what scientists thought they knew about this legendary predator.","footnotes":""},"categories":[83],"tags":[],"class_list":["post-28786","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\/28786","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\/28"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/comments?post=28786"}],"version-history":[{"count":0,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/posts\/28786\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/media\/28785"}],"wp:attachment":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/media?parent=28786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/categories?post=28786"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/tags?post=28786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}The tooth everyone finds at the beach<\/h2>\n
A giant that rewrote the rulebook on size<\/h2>\n
The robot that went where no one expected to look<\/h2>\n
What a single tooth on the deep seafloor tells us<\/h2>\n
Why this changes the story we tell about extinction<\/h2>\n