Are Sea Urchins USING TOOLS?!

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  • เผยแพร่เมื่อ 18 ธ.ค. 2024
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    You might have noticed that sea urchins sometimes make some interesting fashion choices, covering themselves with all sorts of odds and ends, and it turns out they have a lot of different reasons for doing this.
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ความคิดเห็น • 258

  • @SciShow
    @SciShow  2 ปีที่แล้ว +31

    Head to linode.com/scishow to get a $100 60-day credit on a new Linode account. Linode offers simple, affordable, and accessible Linux cloud solutions and services.

    • @KingOfGamesss
      @KingOfGamesss 2 ปีที่แล้ว

      To get to the other side

  • @eklectiktoni
    @eklectiktoni 2 ปีที่แล้ว +145

    So basically they wear clothing for the same reasons we do - big floppy hat to shade oneself in the sun, backpack full of yummy treats, camouflage fatigues so your enemies don't see you, and a safety tether so you don't get dragged out to sea. Pretty cool. 😊

  • @angieemm
    @angieemm 2 ปีที่แล้ว +127

    A sea urchin that stashes snacks in its spines! I loved sea urchins before but now I love them even more.

  • @greenredblue
    @greenredblue 2 ปีที่แล้ว +191

    Oh no, now I feel bad. I assumed that clearing off the rubble sitting on top of an urchin was helping it. I didn't mean to steal its stuff...

    • @Honorarificus
      @Honorarificus 2 ปีที่แล้ว +93

      sea police here, you're under arrest for stealing urchin hats

    • @onii-chandaisuki5710
      @onii-chandaisuki5710 2 ปีที่แล้ว +34

      'the road to hell is paved with good intentions'.

    • @kissit012
      @kissit012 2 ปีที่แล้ว +5

      You just exposed it’s camouflage

    • @andrewpaige1194
      @andrewpaige1194 2 ปีที่แล้ว +2

      Hahahahaha me too! It’s ugly, so I always take stuff off, but yeah, poor things:(

  • @AJVD2123
    @AJVD2123 2 ปีที่แล้ว +8

    One of my urchins currently has a thermometer, two algae clips, and a dozen or so snail shells on

  • @kaitlynoddie9649
    @kaitlynoddie9649 2 ปีที่แล้ว +467

    I THOUGHT URCHINS ONLY WORE HATS IN STARDEW VALLEY

    • @julia5459
      @julia5459 2 ปีที่แล้ว +32

      WAIT THEY DO?

    • @Tenebrio_molitor1
      @Tenebrio_molitor1 2 ปีที่แล้ว +59

      @@julia5459 Yeah, you can put hats on urchins if they're in an aquarium.

    • @85jvia
      @85jvia 2 ปีที่แล้ว +53

      Apparently the devs did their research

    • @Brabbs
      @Brabbs 2 ปีที่แล้ว +13

      Gave a like just cause of the stardew valley mention 🤣

    • @Gryphonzwing
      @Gryphonzwing 2 ปีที่แล้ว +34

      @@85jvia Dev one dev.

  • @kanelovec4315
    @kanelovec4315 2 ปีที่แล้ว +252

    I love the hats. Even a simple organism can use tools. Using objects for proposed shows they are smarter than we think. Maybe thats why they have large numbers and can be found in alot of environments.

    • @evilsharkey8954
      @evilsharkey8954 2 ปีที่แล้ว +19

      It’s instinct, but it’s still pretty impressive for a creature with no brain at all.

    • @SioxerNikita
      @SioxerNikita 2 ปีที่แล้ว +4

      If we want to talk about a creature that uses tools, it has to be learned behavior for it to be smart.

    • @Awesomeficationify
      @Awesomeficationify 2 ปีที่แล้ว

      Woah, slow down there friend. They are incapable of thought. Like others have mentioned, they don't have a brain. It's like your plant growing towards sunlight, doesn't rly think about it.

    • @KCJbomberFTW
      @KCJbomberFTW 2 ปีที่แล้ว

      Anything living as long as these becomes wise

    • @SioxerNikita
      @SioxerNikita 2 ปีที่แล้ว +5

      @12 34 What gotcha point do you think you made? Learned behavior doesn't mean you have to learn from others.
      Human beings can learn by themselves, and so can octopi. For that matter they can teach each other.
      I have no idea why you tried to "gotcha" when you completely missed the point.

  • @jkb2016
    @jkb2016 2 ปีที่แล้ว +62

    They're both, bizarre and adorable! And, of course, well dressed.

  • @Beryllahawk
    @Beryllahawk 2 ปีที่แล้ว +36

    Sea Floor Fashion Show: Urchin Edition
    And the image of a sea urchin with a cowboy hat on is going to stay with me all week I think - that is TOO cute

  • @sohopedeco
    @sohopedeco 2 ปีที่แล้ว +62

    It's bizarre to remember sea urchins are animals who actualy do things instead of a things that just stay still.

  • @22Chrome
    @22Chrome 2 ปีที่แล้ว +17

    Because they’re very stylish creatures. ( Funny story real quick I was at a beach once and picked up my hat and a beached urchin was under my hat, my hat was right beside the current of the ocean )

  • @Roguefem76
    @Roguefem76 2 ปีที่แล้ว +16

    "Which of course is a thing people do"
    I feel attacked. 😆

  • @soogymoogi
    @soogymoogi 2 ปีที่แล้ว +80

    Oh my god the tiny 3d printed hat... 😂

    • @TragoudistrosMPH
      @TragoudistrosMPH 2 ปีที่แล้ว +8

      I rarely approve of oddly frivolous behavior... but I commend their eccentricity lol.

    • @chimpazoo1143
      @chimpazoo1143 2 ปีที่แล้ว +3

      @@TragoudistrosMPH Jolly god, well said Mon Seigneur.

    • @3possumsinatrenchcoat
      @3possumsinatrenchcoat 2 ปีที่แล้ว +12

      local aquarium place has a variety for the urchins in the permanent display tank including a cowboy hat and Viking helmet (plus plenty of actual natural stuff in the tank obv - though at one point one guy decided the thermometer was his new outfit.)

    • @soogymoogi
      @soogymoogi 2 ปีที่แล้ว +8

      @@3possumsinatrenchcoat I work in the fish section of a certain smaller chain pet store, thinking of printing safari hats for our urchins if my boss gives me the ok

  • @hannah.b_765
    @hannah.b_765 2 ปีที่แล้ว +33

    I learned a lot of things by watching this video, but by far the most important is that sea urchins are very, VERY cute.

    • @juanjoyaborja.3054
      @juanjoyaborja.3054 2 ปีที่แล้ว +4

      They’re like spiky little roombas, and unlike other echinoderms, they’re purely herbivorous, which makes them seem more pleasant but also happens to be a quite huge problem in some harbours

    • @pufrmel
      @pufrmel 2 ปีที่แล้ว +2

      @@juanjoyaborja.3054 They are not purely herbivores as they will eat animal matter on occasions but yes they are mostly herbivorous

    • @juanjoyaborja.3054
      @juanjoyaborja.3054 2 ปีที่แล้ว +2

      @@pufrmel I didn’t know that, I’d think that they were incapable of eating other animals

  • @tatuvarvemaa5314
    @tatuvarvemaa5314 2 ปีที่แล้ว +15

    I want to know more fun facts about sea urchants. I thought that they were just some spiky ball that didn’t move or do anything but just sit there and exist with alot of spikes.
    But now I know they wear hats which is one adorable.

    • @littlesnowflakepunk855
      @littlesnowflakepunk855 2 ปีที่แล้ว +1

      they can also walk around and hunt. their behavior/diet is actually kinda similar to certain kinds of starfish

    • @cHAOs9
      @cHAOs9 2 ปีที่แล้ว +1

      They attack in swarms and will eat anything including starfish

  • @1.4142
    @1.4142 2 ปีที่แล้ว +13

    I bet their favorite line is "I'll eat my hat"

  • @rickseiden1
    @rickseiden1 2 ปีที่แล้ว +50

    If they cover themselves in shells and stones that are covered in algae that they eat, does that mean that they are farming algae?

    • @DasAntiNaziBroetchen
      @DasAntiNaziBroetchen 2 ปีที่แล้ว +10

      If I cover myself in salad, does that mean I am farming salad?

    • @skrimper
      @skrimper 2 ปีที่แล้ว

      It's possible, I mean there are those ants that farm fungus

    • @justincraig398
      @justincraig398 2 ปีที่แล้ว +17

      @@DasAntiNaziBroetchen if the salad grew on you, then yes. Algae stuck on a shell that is on an urchin would end up continuing to grow in that shell as the urchin lived its life. So it’s pretty similar to farming , a lot more similar than your comparison of dumping lettuce on your head.

    • @curiousKuro16
      @curiousKuro16 2 ปีที่แล้ว +1

      Maybe for some of the wild urchins at least. Maybe not for the 3D printed ones?

    • @keithyinger3326
      @keithyinger3326 2 ปีที่แล้ว +6

      @@DasAntiNaziBroetchen I would say no. The urchins aren't exactly covering themselves and algae, but with bits of shell and stone with algae growing on them. I think a better analogy would be wearing a pot of soil with veggies growing in it. Or maybe as my grandfather used to say.. it's so dirty behind your ears you could grow potatoes. Go take a bath! Lol
      He was also up farmer so this was after a day out in the shop and field with him. Those are good memories :)

  • @tuckergregory
    @tuckergregory 2 ปีที่แล้ว +6

    I have a new appreciation for the spiky water life balls

  • @Ultimate_Hater75
    @Ultimate_Hater75 2 ปีที่แล้ว +4

    Now imagine what weird shenanigans ancient extinct creatures do that we can't guess from just fossils.

  • @mojojoji5493
    @mojojoji5493 2 ปีที่แล้ว +8

    Zefrank1 “the see spike likes to wear fashionable hats on top of his poky poky tips”

  • @waffles3629
    @waffles3629 2 ปีที่แล้ว +9

    My favorite part is how the developer of Stardew Valley put this in. I totally don't save up 333 Omni geodes for a magic cowboy hat for a sea urchin. Definitely not. Hehehe

  • @katetoolate234
    @katetoolate234 2 ปีที่แล้ว +10

    So is this why in Stardew Valley you can put a hat on a sea urchin when it's in a fish tank! 😄 Would be so cool if that secret special features had a reason for being!

  • @craigme2583
    @craigme2583 2 ปีที่แล้ว +3

    Love urchins, I had many in my tank. Great fun creatures always holding something over them, lots of little arms. Very sweet to have in any marine tank. You don't notice their cute behaviour in rock pools or snorkling. They hide too well. Pull them very slowly off their rock, andcthey are easy to collect. They are hardy and clean the tank, wiggle around, cope with wide temperature range. Lovely. Very common.

    • @AstralArbourSystem
      @AstralArbourSystem 2 ปีที่แล้ว

      Don't steal them from outside though! That's not very nice!

    • @craigme2583
      @craigme2583 2 ปีที่แล้ว

      @@AstralArbourSystem no. But fishermen take a lot for bait, very common

    • @AstralArbourSystem
      @AstralArbourSystem 2 ปีที่แล้ว

      @@craigme2583 ah i see

  • @tomfiddzy1827
    @tomfiddzy1827 2 ปีที่แล้ว +51

    Fascinating video. I just have one question, how do they pick up and hold the items?

    • @kf10147
      @kf10147 2 ปีที่แล้ว +55

      Their spiky bits are actually tube feet! The ends are little suction cups that can grab hats and food and rocks and stuff! I recommend deep look's sand dollar video to learn more seriously or zefrank's true facts sea star video for a humorous learning experience.

    • @peterjf7723
      @peterjf7723 2 ปีที่แล้ว +20

      Between their spines they have extendable tube feet, each with a suction cup on the end.

    • @tomfiddzy1827
      @tomfiddzy1827 2 ปีที่แล้ว +1

      @@kf10147 Thank you :)

    • @tomfiddzy1827
      @tomfiddzy1827 2 ปีที่แล้ว

      @@peterjf7723 Thanks :)

  • @oracleofdelphi4533
    @oracleofdelphi4533 2 ปีที่แล้ว +36

    I'm sure wildlife ask many more questions as to why humans do anything.

    • @evilsharkey8954
      @evilsharkey8954 2 ปีที่แล้ว +8

      I think a lot of wildlife has just written us off as weird things to be avoided except when we have food.

  • @Keigo_88
    @Keigo_88 2 ปีที่แล้ว +8

    They look pretty fresh with hats

  • @jiminboo
    @jiminboo 2 ปีที่แล้ว +25

    You keep saying words like “pick up” and “put on”… but how… HOW?!?! Do sea urchins hide arms somewhere???

    • @lithobreak3812
      @lithobreak3812 2 ปีที่แล้ว +20

      Yes, just like sea stars and brittle stars sea urcheons have thousands of little tentacles across their surface

    • @lithobreak3812
      @lithobreak3812 2 ปีที่แล้ว +11

      I recommend you watch zefrank's recent video on the sea star family

    • @jiminboo
      @jiminboo 2 ปีที่แล้ว +3

      @@lithobreak3812 thanks!!!!!

  • @candycemonroe7345
    @candycemonroe7345 2 ปีที่แล้ว +1

    Disney 3d printed Mickey ear hats for their urchins at Epcot and it was so cute.

  • @fourleafclover2064
    @fourleafclover2064 2 ปีที่แล้ว +1

    Petition to give all urchins a lil hat

  • @carinajolierouge
    @carinajolierouge 2 ปีที่แล้ว +4

    Lil hat for sunbathing

  • @Ly_7838
    @Ly_7838 2 ปีที่แล้ว +5

    Awww how cute still spiky asf and dangerous as hell though

    • @vincentlee7359
      @vincentlee7359 2 ปีที่แล้ว +3

      Great to use to throw at people

    • @Ly_7838
      @Ly_7838 2 ปีที่แล้ว +1

      @@vincentlee7359 gonna have to agree with that sadly

    • @apdroidgeek1737
      @apdroidgeek1737 2 ปีที่แล้ว +1

      most of these urchins have blunt spikes they evolve to hide from predators instead of using their spikes to protect themselves, few urchins I can name of are actually dangerous one being the flower urchin and the long spiny urchin which doesn't hide from predators but instead uses their powerful venom to protect themselves. Most of these urchins even the one that have blunt spikes are venomous but its incredibly hard to get stabbed by one unless you really try to, and their venom is very mild compared to the two urchins ive mentioned

    • @Ly_7838
      @Ly_7838 2 ปีที่แล้ว +1

      @@apdroidgeek1737 oh cool

  • @anyascelticcreations
    @anyascelticcreations 2 ปีที่แล้ว +3

    I never knew they could even move, let alone dress themselves. Or possibly think about what to wear or why.

  • @jordynozymandias374
    @jordynozymandias374 2 ปีที่แล้ว +1

    they do it because it's cool and rad don't question their swag

  • @ivoryowl
    @ivoryowl 2 ปีที่แล้ว +1

    I'm sorry, but that urchin with a cowboy hat looks adorable! :3

  • @callummy3250
    @callummy3250 2 ปีที่แล้ว +1

    I'm almost offended that Beebo and Boba weren't featured in this piece.

  • @davidbryden7904
    @davidbryden7904 2 ปีที่แล้ว +1

    Cool adaption to carry your garden on your back! 😎✌️

  • @ajhuredreams
    @ajhuredreams 2 ปีที่แล้ว

    Sea urchins with jaunty little hats is my favorite thing on the internet this week!

  • @TheRealSkeletor
    @TheRealSkeletor 2 ปีที่แล้ว +1

    That moment when one of your favorite science educators mispronounces "anemones" as "an enemies".

  • @robby7499
    @robby7499 2 ปีที่แล้ว +3

    Because they're out for a stroll.

  • @pencilpauli9442
    @pencilpauli9442 2 ปีที่แล้ว +6

    Q: Why do sea urchins wear clothes?
    A: Because they don't want to be naked like nudibranchs.

    • @curiousKuro16
      @curiousKuro16 2 ปีที่แล้ว +2

      Borrowing this joke for the future, thank you!

  • @AtomicEy
    @AtomicEy 2 ปีที่แล้ว +1

    title gave me Llamas with Hats memories

  • @aaronfitz2892
    @aaronfitz2892 2 ปีที่แล้ว

    its honestly really cool mines carrys around a piece of gsp "green star polyp" and it with the coral open is so cool

  • @TragoudistrosMPH
    @TragoudistrosMPH 2 ปีที่แล้ว +3

    Sea anemone eat sea urchins?
    This was fascinating... So much new knowledge haha

    • @evilsharkey8954
      @evilsharkey8954 2 ปีที่แล้ว

      That’s pretty impressive considering how slowly anemones move. Apparently, that anemone can also catch and eat fish, sea stars, sea cucumbers, and various mollusks.

  • @paintballercali
    @paintballercali 2 ปีที่แล้ว +1

    I had no idea they could move stuff.

  • @TheCalzone27
    @TheCalzone27 2 ปีที่แล้ว +1

    Now I have to get a sea urchin tattoo with a cowboy hat Lmaoo

  • @Zmiana_Pogody
    @Zmiana_Pogody 2 ปีที่แล้ว +1

    I love this episode!

  • @DoctaOsiris
    @DoctaOsiris 2 ปีที่แล้ว +11

    I've only seen Urchins once in my life when I went scuba diving in Spain and I don't remember seeing any of them covered with anything. 🤷
    I'm from the UK and I don't think we have any at all, I certainly don't know anyone who's ever seen them up close like I have.

    • @apdroidgeek1737
      @apdroidgeek1737 2 ปีที่แล้ว +4

      I've seen one, now you know someone that did.

    • @apdroidgeek1737
      @apdroidgeek1737 2 ปีที่แล้ว +7

      not all sea urchins does this, tuxedo urchins and pincushion urchins does this the most they are abundant in aquarium pet trades.

    • @doodskie999
      @doodskie999 2 ปีที่แล้ว +6

      I live in the tropics i asia, I always wonder why there are random bits of shells I see on sea urchins

    • @evilsharkey8954
      @evilsharkey8954 2 ปีที่แล้ว +3

      Only short spined urchins wear stuff. There are definitely urchins in the UK, but they’re probably hanging out in water you don’t swim in. If you scuba dive around the coasts, you may find some tucked into gaps in rocks.

    • @JackFrawley101
      @JackFrawley101 2 ปีที่แล้ว +2

      Fairly common in the coastal areas of Vic Australia, I have seen quite a few camoflauged in this way, bits of stone and kelp

  • @sophroniel
    @sophroniel 2 ปีที่แล้ว +2

    Eyyyy kina!!! They're so good with a bit of butter. Kai moana at its best 😉🥰

  • @longlakeshore
    @longlakeshore 2 ปีที่แล้ว

    Street urchins on the other hand cover themselves with cuteness. Scientists have yet to work out why.

  • @geoffreymartin6363
    @geoffreymartin6363 2 ปีที่แล้ว +3

    KEE-Nah is how one pronounces kina not kin-ah. Māori vowel sounds. Good episode though

  • @halowaffle25
    @halowaffle25 2 ปีที่แล้ว +10

    Even the simplest animals are smarter than we give them credit for. I wonder just how far down the food chain you'd have to go to find truly unintelligent life?

    • @apdroidgeek1737
      @apdroidgeek1737 2 ปีที่แล้ว

      plants.

    • @NaturesAnomalies
      @NaturesAnomalies 2 ปีที่แล้ว +4

      @@apdroidgeek1737 plants are intelligent and communicate with each other and many even sleep. Now don't even get started on how smart fungi is

    • @GodofMasks
      @GodofMasks 2 ปีที่แล้ว +8

      I don't know. I work with some people that make me wonder.

    • @arieldanielle23
      @arieldanielle23 2 ปีที่แล้ว +1

      Depends on the yardstick you're using. If survival tactics count as intelligence you're setting the bar pretty low. Surviving is an instinct, a biological imperative, arguably little conscious thought goes into it.

  • @firstjayjay
    @firstjayjay 2 ปีที่แล้ว

    1:00 how the heck do they know which givs better uv protection...?

  • @MissPersephoneParker
    @MissPersephoneParker 2 ปีที่แล้ว

    The 3D printed hats made me so happy lol

  • @leko_top4z600
    @leko_top4z600 2 ปีที่แล้ว +2

    It’s almost like how humans wear hats for multiple reasons.

  • @Tfin
    @Tfin 2 ปีที่แล้ว +2

    The anemone is not "an enemy." Don't call it that. It just wants to get by like anyone else.

  • @elsomnoliento
    @elsomnoliento 2 ปีที่แล้ว

    1:53 What are sea anenomies? 🤔🤔

  • @mariakasstan
    @mariakasstan 2 ปีที่แล้ว +1

    How do they manipulate objects?

  • @fairybeliever4479
    @fairybeliever4479 2 ปีที่แล้ว +4

    Deep down, sea urchins are fashionistas.

  • @kimbratton9620
    @kimbratton9620 2 ปีที่แล้ว

    Wow I never knew this before!

  • @NeonVisual
    @NeonVisual 2 ปีที่แล้ว +3

    Maybe they just like to feel pretty once in a while okay? /s

  • @Kayclau
    @Kayclau 2 ปีที่แล้ว

    Real science right here!

  • @98erics
    @98erics 2 ปีที่แล้ว

    This is a popular misconception. They wear hats to show which gang they're in.

  • @sailorssea
    @sailorssea 2 ปีที่แล้ว +1

    I have green and red urchins in my aquarium. The green urchins pack everything around red not so much. All the live in my aquarium are bycatch of our shellfish farm.

  • @AngryKittens
    @AngryKittens 2 ปีที่แล้ว +1

    To hide their bald spots.
    Hee-haw. Hee-haw.

  • @General12th
    @General12th 2 ปีที่แล้ว

    Hi Stefan!

  • @JermaineDaniels-xh8wd
    @JermaineDaniels-xh8wd 5 หลายเดือนก่อน

    When is this urchin at its best to harvest in the season ❤

  • @screamz3r089
    @screamz3r089 2 ปีที่แล้ว +2

    And here I thought its just they cant remove them...(those small spiked ones that live near rocks usual colors are yellow black)...

  • @user-ew8mm6ob9e
    @user-ew8mm6ob9e 2 ปีที่แล้ว +1

    How do urchins sense red vs clear?

  • @cHAOs9
    @cHAOs9 2 ปีที่แล้ว

    These sea urchins are smarter than some people i know

  • @djSpinege
    @djSpinege 2 ปีที่แล้ว

    was hoping for a time laps of them picking up stuff.

  • @Tracy-xe9zu
    @Tracy-xe9zu 2 ปีที่แล้ว

    Look up 'sea urchins wearing tiny hats' for free serotonin. You're welcome.

  • @deannarachelbobiwsky2366
    @deannarachelbobiwsky2366 2 ปีที่แล้ว

    I'm reminded of The Little Trashmaid!

  • @jb888888888
    @jb888888888 2 ปีที่แล้ว

    It's so the urchin can take it off and hod it upside down when begging.

  • @TheQueerLeaf
    @TheQueerLeaf 2 ปีที่แล้ว +1

    Very cool

  • @salomemimiux5316
    @salomemimiux5316 2 ปีที่แล้ว +1

    So stylish! :V

  • @csueconner9711
    @csueconner9711 2 ปีที่แล้ว +1

    Maybe they are self aware and don’t like going out in public naked.

  • @edwarddoernberg3428
    @edwarddoernberg3428 2 ปีที่แล้ว

    ok, that covers why
    how do they get things onto themselves, no arms no hands, how dose an urchin get a hat onto its "head"

  • @isaiahh5932
    @isaiahh5932 2 ปีที่แล้ว

    I wear hats as well on my second head.

  • @razi_man
    @razi_man 2 ปีที่แล้ว

    Kinda funny seeing a sea urchin with a cowboy hat, to be honest.

  • @NajwaLaylah
    @NajwaLaylah 2 ปีที่แล้ว

    I'd like to collect sea urchins for my compost heap.

  • @jasepoag8930
    @jasepoag8930 2 ปีที่แล้ว +3

    I wish they wouldn't! Mine keeps picking up my corals and moving them around.

  • @exMuteKid
    @exMuteKid 2 ปีที่แล้ว

    I wanna make a mini Sunhat for a sea urchin

  • @cadywilson5556
    @cadywilson5556 2 ปีที่แล้ว +1

    Urchin Cowboy

  • @wateringplamts2382
    @wateringplamts2382 2 ปีที่แล้ว

    they just wanna look fancy

  • @stopgont7360
    @stopgont7360 2 ปีที่แล้ว

    My question is how do they out the "hats" on?

  • @Joso997
    @Joso997 2 ปีที่แล้ว +1

    It is so others can know where their head is.

  • @IsAMank
    @IsAMank 2 ปีที่แล้ว

    Someone's growing grandpa in that thing

  • @buttermepancake3613
    @buttermepancake3613 หลายเดือนก่อน

    Ah now the sea urchin is invasive AND cute af 😂

  • @koolkestrel9512
    @koolkestrel9512 2 ปีที่แล้ว +1

    Lil spiky ball

  • @dinostorion
    @dinostorion 2 ปีที่แล้ว

    wow. i need to learn more about urchin anatomy

    • @curiousKuro16
      @curiousKuro16 2 ปีที่แล้ว

      Zefrank recently did a video about sea stars and their relatives [including sea urchins]. There's also more serious resources like the Monterey Bay Aquarium

  • @gothboschincarnate3931
    @gothboschincarnate3931 2 ปีที่แล้ว

    The greater question is....how do they perceive ultra-violet.

  • @nathancook6221
    @nathancook6221 2 ปีที่แล้ว

    In the great wise words of lady ga ga Cus baby they where born this way !

  • @CelesteMinerva
    @CelesteMinerva 2 ปีที่แล้ว +1

    I was today years old...this is amazing!

  • @y0nd3r
    @y0nd3r 2 ปีที่แล้ว

    Were sea urchins the inspiration for tribbles?

  • @janetf23
    @janetf23 2 ปีที่แล้ว +2

    So, sea urchins are much more than just delicious?! 👍

    • @CraftyZanTub
      @CraftyZanTub 2 ปีที่แล้ว +1

      They're fond of cookies too!

  • @SheepHairOG
    @SheepHairOG 2 ปีที่แล้ว

    How do they put them on, I thought they were just balls of spikes

  • @pootisbirb6821
    @pootisbirb6821 2 ปีที่แล้ว

    Hat = Stealth 100

  • @newtscamander2461
    @newtscamander2461 2 ปีที่แล้ว

    What if the sea urchins aren’t grabbing red tiles at night because they can’t tell the difference bc it’s dark

  • @CosmicShieldMaiden
    @CosmicShieldMaiden 2 ปีที่แล้ว

    I ♥️ urchins

  • @jasonwebb1882
    @jasonwebb1882 2 ปีที่แล้ว

    To be honest, I didn't know sea urchins did any of this. I knew that they are alive, but so are tress. Lol. How do they pick them up and how do they see? Do they have eyes or just sensors on all those spikes? Crazy, I learned something for sure and it's left me with more questions then answers. Lol. Gotta love youtube and Google.

    • @DJFracus
      @DJFracus 2 ปีที่แล้ว +2

      Urchins can pick up stuff with their tube feet. It's these things that come out from the middle that are like tentacles (not the spines), or water tubes with suction cups at the end. It's the same thing that sea stars move with.
      Also, the tube feet that are all over their bodies have light-receptive cells in them, so they can see. They can't see well at all, but they can see a bit. Technically they are seeing without eyes, since they have no specific organs dedicated to sight.