True Facts: Freaky Nudibranchs

True Facts: Freaky Nudibranchs

Cuz the ocean is weird.
written and voiced by Ze Frank
thanks to Patreon supporter Sydney Brown for the Pikachu Swiffer line that she left in a comment. Join the community! It’s fun!

Hal Brindley
Hal has an amazing vid of a botfly on his channel… sooooo gross.

Dr. Jeffrey Goddard
, William Goddard
Dr. Goddard and his son were very generous with their time and footage! Gave me some great notes so I didn’t get my facts bungled!

Dr. Jamie Seymour
Dr. Seymour has captured some of the most remarkable footage of nematocysts firing I have ever seen. Ptowwww.
Tropical Australian Stinger
Research Unit (TASRU)

Bocas Del Toro Research Station

Smithsonian Tropical Research Institute
Thank you to the Smithsonian and to Dr. Maria Pia Miglietta for the wonderful image of the unexploded nematocyst.

Dr. Louise Page :
University of Victoria

Dr. Page’s footage of the veligers (Melibe) were a lifesaver. I wish I had more time to spend on their fantastic lifecycle.

Dr. Leslie S Babonis
: Whitney Laboratory for Marine
Dr.Babonis has the coolest job. Firing lasers to trigger nematocyst firing!

Phil Lemley
Phil was so generous to allow me the use of his attacking rainbow nudi…yeah the proctologist…

Dr. Marta Pola Perez
Universidad Autónoma de Madrid

Dr.Perez has looked at the possibility of self fertilization in Nudis – and you never know!

Costasiella footage courtesy of David Palfrey/Hydra Productions Film, Photo and Training, Indonesia @hydra.underwater
David let me use his Shaun the Sheep slug footage, which is really some of the best footage I have seen of this cute slug. 

Pinneng was kind enough to share his Pikachu footage… Quick attack! Electric Shock!

Elyse Messick captured nematocysts firing as a student and I tracked her down on linked in!

Thank you to the following photographers that uploaded their work on Flickr with commercial licenses! A huge help to people like me:

Greg Schechter:
Chika Watanabe :
Kris-Mikael Krister :
Christian Gloor :

Additional Footage from ShutterStock and Envato Elements
Music by Tom Moore:

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56 Responses

  1. Mochi Mocha says:

    “Trying to tongue sponge the crumbs out of a Pringles can” 😂😂😂

  2. Keyboard says:

    “butt smuggling hand grenades” is probably the best analogy i’ve heard for an animal’s defense mechanism

  3. Dr Bright says:

    “It’s like if you could transport pop rocks to the tip of your….”
    [Insert joke about the banned pop rocks add here]

    • Beach Girl says:

      Paul Hollier,
      I just had a memory from the eighties, but Ze has too many underage subscribers to share it. Pop rocks are overrated as a sex enhancer. Zotz don’t do much, either.

    • Paul Hollier says:

      @Beach Girl People eat Tide Pods. God help us all, if they find out about all the pretty pink cotton candy up in the attic!

    • RRW says:

      Due to your name, I assume you’re familiar with at least one of these.

    • Sizzlik says:

      What pop rock ad was banned and why? (pop rocks are not sold no pop rock ads)

    • Dr Bright says:

      Sizzlik There was a pop rocks ad whom’s plot was a high school girl giving her teacher a blowjob to get her grades up, and she filled her mouth with pop rocks to get him to climax quicker.

  4. Scorpionstrike7 says:

    Whenever he says “floppy floppy” and “fleshy fleshy”, I feel like my soul has been cleansed.

  5. Craig B says:

    I can’t explain it but just hearing him say Babies makes me laugh, every single time

  6. nymersic says:

    5:41 “This one is perfectly camouflaged as an old man with his hands behind his back inspecting his garden. ‘Damned slugs, eating my azaleas!’ That’s irony. ‘You’d better stop before I assault you!’ That’s a dad joke.”

    Man there’s a lot going on there.

  7. Andree Hansen Wibowo says:

    And that’s how the nudibr—

    *Advertisement starts*

    *Waits patiently for 5 seconds*

    *Skip ad*

    —branch do.

    Aw yiss

  8. Yan A says:

    “It strikes with the vigor of a Proctologist who lost his wedding ring!” HJDGJISPFDJLOSKD:LLDKLSJ

    • Paul Hollier says:

      I feel sorry for anyone that was eating or drinking, when he said that line; and I am even sorrier for anyone unlucky enough to be standing / sitting anywhere in the “Splash Zone”, when they explosively re-distributed the food a/o drink in their mouth.

    • Duddridge1 says:

      It took a moment to realise what that meant, until I imagined the scenario.

    • Ryan Barrett says:

      I have *got* to stop reading comments before watching the video.

    • Shnarfbird says:

      I think that was actually the anemone retracting, with the nudibranch attached

    • I’m already Sans Undertale says:


  9. Joie Englin says:

    “Get out of your shell, and untwist.” — ZeFrank

    Words to live by.

  10. Andy Lee says:

    A dad joke from zefrank?! Oh no, hes evolving.

  11. KingMako30 says:

    The first twelve seconds caught me completely off-guard.

  12. dumaskhan says:

    “they teach you” oh no no no, they immediately put you in that form, without warning or permission.

  13. darlene3d says:

    “Floppy-Floppy Spikey Things”


    “The Swimmy-Swimmy”


  14. Viv illon says:

    “yes, that one does look like a Pikachu that got busy with a swiffer” this got me

  15. Caroline Yuen says:

    “The nudibranch’s genitals are located near its head on the right side of its body…because of course they are”

    • Rinsuki says:

      Well land slugs are like that too. It is near their head and when they do their little slug dance their glowing genitals sometimes get stuck and they just break them off and regrow as well. Lol.

    • DynamicWorlds says:

      To be fair, ours are right next to our anus which (if I may steal from a great comedian) is like putting an amusement park next to a waste treatment plant.

      …and for birds, it’s even worse, because they can be in the same hole.

    • Raidens Hat says:


  16. karen sarager says:

    “…this is important because their eyes totally suck.” 😂😂

  17. Matthew M says:

    “F” is for friends who do things together
    “U” is for you and me!
    “N” is for anywhere and anytime at all!
    Down here in the deep blue sea

  18. Tim Sullivan says:

    Most DIABOLICAL YouTube Ad placement EVER: “And that is how the nudibrach…” [ad for an effing bank] “…do.”

  19. Yerghaiz Verot says:

    “Every time you ask ‘Why?, evolution adds or removes a nipple from a cat.”

    You are a genius, sir

  20. Erin Piazza says:

    “That’s like trying to tongue sponge the crumbs out of the bottom of a can of Pringle’s” 4:57

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