Why Megalodon (Definitely) Went Extinct

  • Published on: 19 December 2018
  • For more than 10 million years, Megalodon was at the top of its game as the oceans’ apex predator...until 2.6 million years ago, when it went extinct. So, what happened to the largest shark in history?

    Thanks as always to Nobumichi Tamura for allowing us to use his wonderful paleoart: http://spinops.blogspot.com/

    And thanks to Joschua Knüppe and Studio 252mya for the illustration of Piscobalaena. You can find more of Joschua's work here: https://www.deviantart.com/hyrotrioskjan

    Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

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    References:
    https://www.researchgate.net/profile/John_Barron3/publication/222968661_Late_Neogene_changes_in_diatom_sedimentation_in_the_North_Pacific/links/5afb194a458515c00b6d64bb/Late-Neogene-changes-in-diatom-sedimentation-in-the-North-Pacific.pdf
    https://www.researchgate.net/publication/312500230_A_well_preserved_skeleton_of_the_fossil_shark_Cosmopolitodus_hastalis_from_the_late_Miocene_of_Peru_featuring_fish_remains_as_fossilized_stomach_contents
    https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0010552
    https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1475-4983.2012.01201.x
    https://www.ncbi.nlm.nih.gov/pubmed/28586693
    https://www.ncbi.nlm.nih.gov/pubmed/27381883
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4541548/
    https://www.ncbi.nlm.nih.gov/pubmed/29754903
    http://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2006n2a8.pdf
    https://www.ncbi.nlm.nih.gov/pubmed/27620830
    https://onlinelibrary.wiley.com/doi/full/10.1111/jbi.12754
    https://www.nature.com/articles/nature09067
    https://www.sciencedirect.com/science/article/pii/S0031018216305417
    https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0111086
    http://science.sciencemag.org/content/327/5968/993
    https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0084857
    https://www.nature.com/articles/ngeo2813
    https://www.researchgate.net/publication/233681377_New_fossil_teeth_of_the_White_Shark_Carcharodon_carcharias_from_the_Early_Pliocene_of_Spain_Implication_for_its_paleoecology_in_the_Mediterranean
    http://ufdc.ufl.edu/UFE0042397/00001
  • Runtime : 11:13
  • dinosaurs dinos paleo paleontology scishow eons pbs pbs digital studios hank green john green complexly fossils natural history Piscobalaena Megalodon Sharks Whales Marine Mammals Great White Shark Pliocene Lamniformes Otodontidae mesothermic Livyatan melvilli Carcharodon diatoms Pleistocene dolphins seals plate tectonics shark teeth

COMMENTS: 40

  • PBS Eons
    PBS Eons   1 years ago

    As some of you have pointed out, the size comparison we show at 9:36 features a humpback whale instead of a blue whale. That's my fault! The illustration (from a stock photo site) was improperly labeled and we missed the mistake in our review. We spent so much time making sure we had all of the extinct species depicted accurately that we missed the (enormously) obvious error right in front of us. Sorry for the mistake! -Seth

  • R0B10X
    R0B10X   10 hours ago

    Only 20 percent of the seas have been discovered so there might still be a megalodon

  • Pow Bam Zing
    Pow Bam Zing   22 hours ago

    Putting myself into a cryogenic capsule for the sole purpose of coming back a trillion years from now and finding sharks and whales the size of aircraft carriers.

  • Niyah Vu
    Niyah Vu   1 days ago

    Aye I didn't know my homie otodontidae had kids💀

  • Eric Aase Olsen
    Eric Aase Olsen   1 days ago

    Megalodon vs liopleurodon vs dunkelosteus! That would be a cool battle

  • M. Faiz VI A
    M. Faiz VI A   1 days ago

    Am i the only one who thinks about these things over and over and be fascinated by this awesome

  • FishyzDill
    FishyzDill   1 days ago

    Nobody : No even a soul Me : 2020?

  • Njabulo Pega
    Njabulo Pega   1 days ago

    No if there is bigger sharks we might not be able to go to to the beach

  • Joedakye Coolwell
    Joedakye Coolwell   2 days ago

    Lol have you tryed getting prove about the kraken not livening.

  • Jean d'Arc
    Jean d'Arc   2 days ago

    It went extinct because they ate everything out there! MOFO had a bite force of more than 44000 PSI, putting T-Rex absolutely to shame!

  • Bros Mad
    Bros Mad   3 days ago

    It's almost 5 am yet here I am wondering why this nightmare fuel thing died

  • Kevin Johnston
    Kevin Johnston   3 days ago

    This comment section SLAPS . I guess shark humor is a thing !?

  • ;Mythical Twins;
    ;Mythical Twins;   3 days ago

    If a megalodons tooth was as big as your hand..You should see its d-

  • Yu
    Yu   3 days ago

    Don't assume this until we discover the rest of the 95% of our oceans.

  • Krezy Jesse
    Krezy Jesse   3 days ago

    I thought this was how they got extinct not English class

  • Josiah Garcia
    Josiah Garcia   3 days ago

    She dont know that we have only explored 5 percent of the ocean

  • rodcyrene marco
    rodcyrene marco   3 days ago

    well the book was right megalodons DO NOT exist freak you bright side =(

  • Anonymous
    Anonymous   4 days ago

    The fact the Megalodons are extinct may or may not still be true. Someone told me about a Nat Geo article they read where a group of marine paleontologists found Megalodon teeth that carbon-dated to around 250 years ago. This means that, at least 250 or so years ago, there was at least one live Megalodon still in the ocean. For all we know, Megalodons could still be alive. If that's not nightmare fuel, I don't know what is.

  • Lamb Sauce
    Lamb Sauce   4 days ago

    Think tho we have only discovered 5% of the ocean so anything similar could exist or even a descendent of megalodon

  • SmexyBoi
    SmexyBoi   4 days ago

    You can’t confirm the extinction of megalodons, mosasaurs, etc, because they would have had millions of years to evolve into extremely deep divers, and we have only uncovered 5% of the ocean.

  • Martim Lopes
    Martim Lopes   4 days ago

    The megalodon still exists because I want it to exist in my head

  • Георги Карачев

    To those who say "OnLy 5% oF tHe OceAn Is ExPlOrEd", I give you this.These 5% are all of the shallow waters, coral reefs, islands and a part of deep waters. A shark cannot live in the other 95% due to he fact everything else is cold and deep turmoil. No, they don't live in the mariana trench. No, they don't live near some abandoned island.

  • Dank creeper [2nd channel]

    They probably aren’t living now but 71% of the surface is oceansAnd that’s just surface OH HO HO YOU DON’T EVEN WANNA KNOW HOW DEEP IT CAN GO(Dips entirety of Mount Everest in ocean)(Doesn’t even touch bottom of the ocean)

  • Baybee
    Baybee   5 days ago

    sspspspspspspspspsssppspspspspsss

  • OwO私はアニメが大好きです

    Us humans haven’t discovered the whole ocean we only discovered 5% and there is still 95% of ocean left to discover and the last seen Megalodon was in 1952

  • Kyle Penna
    Kyle Penna   5 days ago

    We don’t know just yet and how do u know we dident even explore the whole ocean we still don’t know what lingers down there

  • Brian Amberg
    Brian Amberg   6 days ago

    We know for sure no Megalodon because nobody has gone missing at sea since 1847.

  • Nick S
    Nick S   6 days ago

    Naw they still alive

  • PPsmall
    PPsmall   6 days ago

    Meh, i think i can take him

  • Viking Power
    Viking Power   6 days ago

    My thumbnail photo is of my Megalodon tooth. I dug it out on a trip to Scientist cliffs state park in Maryland on the Chesapeake Bay in Calvert county. I found my tooth some 35 years ago. Now if you find any fossils you must surrender them to the park police before leaving. They know the value of Meg teeth and other fossils and will arrest anyone trying to keep them. It's the same at Calvert cliffs state park. My Meg tooth is over 6 inches root to tip and still sharp enough to cut thru a steak like butter.

  • aa
    aa   6 days ago

    megalodon extinct because they were hunted and get eaten by orcas

  • Demid Fedorov
    Demid Fedorov   6 days ago

    Too long. Could’ve been 4 minutes and ways simpler.