When Fish First Breathed Air

  • Published on: 19 June 2018
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    385 million years ago, a group of fish would undertake one of the most important journeys in the history of life and become the first vertebrates to live on dry ground. But first, they had to acquire the ability to breathe air.

    Thanks to Ceri Thomas for the Ichthyostega reconstruction. Check out more of Ceri's paleoart at http://alphynix.tumblr.com and http://nixillustration.com

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

    Lastly, this episode (as well as most episodes of Eons) features beautiful paleoart from Studio 252mya. We dare you to try to not spend hours looking at their work: http://252mya.com

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

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  • Runtime : 9:8
  • dinosaurs dinos paleo paleontology scishow eons pbs pbs digital studios hank green john green complexly fossils natural history arthropods fish breathing air lungs gills Eusthenopteron Ichthyostega Tiktaalik lobe-finned fish spiracular tract bichir mudskipper tetrapodomorphs swim bladder Devonian Oxygen skull-hole oceans


  • david lee
    david lee   18 hours ago

    The tattoo girl said the first fish had gill and lung in the same time

  • Juan Santos Cid
    Juan Santos Cid   1 weeks ago

    why arthropods and fishes evolved to breathe air but not the opposite; like mammals and reptiles that evolved to live in the water but still breath air?

  • Tom Voke
    Tom Voke   1 weeks ago

    Great narration (and material as well).

  • 666Maeglin
    666Maeglin   2 weeks ago

    patreon is social justice warrior cancer

  • Brewhound77
    Brewhound77   2 weeks ago

    FFS all the sibilance sizzles my brains

  • Alberto Louie
    Alberto Louie   3 weeks ago

    It's official: paleobiology is my favorite subject to learn about and this is now my go-to channel! Learning is freaking amazing y'all x

  • tan j maz
    tan j maz   3 weeks ago

    ... Catfish , garfish, mudfish, can breath air and stay out of water for long time ...

  • Ravi Sanghvi
    Ravi Sanghvi   3 weeks ago

    I want my external ears and auditory canal to modify to hear only nice things told by my wife. I am trying to adapt since ages to survive.

  • Mangomart13
    Mangomart13   4 weeks ago

    It’s crazy thinking that one of my grandads is a fish!

  • David Bordayo
    David Bordayo   1 months ago

    Maybe...could of... possibility...we think it might...we don't know ! 😂🤣

  • kailomonkey
    kailomonkey   1 months ago

    So our lungs are just swim-bladders with lots of blood vessels.

  • Lolleepop
    Lolleepop   1 months ago

    i was expecting for bill wurtz references in the comments section

  • Reality Check
    Reality Check   1 months ago

    This video has been debunked. PBS Eons is junk pseudo science: https://evolutionnews.org/2019/08/pbs-eons-teaches-nonsense-about-evolution/

  • DonswatchingtheTube
    DonswatchingtheTube   1 months ago

    Tiktaalik just looks like another salamander. The fossil doesn't show the crucial fins or feet. Not only are we expected to believe it came out of the water and breathed the air, but it managed to find food and sexually reproduced. Passing on the trait to its offspring.

  • Mike LaBarge
    Mike LaBarge   1 months ago

    It feels so weird to call my dinner my fishy ancestor

  • D Maekawa
    D Maekawa   1 months ago

    I can’t believe my great great great great (300M+) grandfather was a fish, I love him so much

  • Mirsal Kamal
    Mirsal Kamal   1 months ago

    So first is fish, they try to live on dry ground, they evelove. Then they back to water and evolve again to "being whale"? Huh?

  • Raven Henry
    Raven Henry   1 months ago

    What kind of animals belonged to what period

  • GodKing Athletics, LLC
    GodKing Athletics, LLC   1 months ago

    Brilliant! And at the risk of seeming shallow...I love her tattoos and gauges in her ear!

  • Ambte naaier
    Ambte naaier   1 months ago

    Thanks for the history lesson, but tattoos are for st*pid people.

  • The Fox
    The Fox   1 months ago

    If the swim bladder thing is true, then an organism can have both gills and lungs.Somebody force scientists to make mermaids.

  • Marcio Coelho
    Marcio Coelho   1 months ago

    They should have mentioned that the bone structure on the tiktaalik's front legs is pretty much the same found today on modern vertebrates hands or paws.

  • Rizky Kazuto
    Rizky Kazuto   1 months ago

    So how it changed/evolve their form since the ancestors was fish

  • John Marksman
    John Marksman   1 months ago

    I remember a guy telling us about the movie Water World was real we would drown under or above water ....It was probably easier for them to adapt then it would today

  • Xynnful
    Xynnful   1 months ago

    Might be a stupid question but did plants and animals have a common ancestor? If so, please tell me what it is.

  • KooKu BOI
    KooKu BOI   1 months ago

    She speaks really elegantly but people who only see the tattoo the wrong way wouldn’t understand

  • truth884
    truth884   1 months ago

    I have a mental obstacle and that’s how do these major mutations happen why are they able to stay and seemingly happen to more that individual specimen seemingly at once. Or am I totally off? What am I missing?

  • Koley Turner
    Koley Turner   1 months ago

    Lol I love how you morons actually think you know exactly what was going on three hundred million years ago