Sea Urchins Pull Themselves Inside Out to be Reborn | Deep Look

Conceived in the open sea, tiny spaceship-shaped sea urchin larvae search the vast ocean to find a home. After this incredible odyssey, they undergo one of the most remarkable transformations in nature.
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Every summer, millions of people head to the coast to soak up the sun and play in the waves. But they aren’t alone. Just beyond the crashing surf, hundreds of millions of tiny sea urchin larvae are also floating around, preparing for one of the most dramatic transformations in the animal kingdom.
Scientists along the Pacific coast are investigating how these microscopic ocean drifters, which look like tiny spaceships, find their way back home to the shoreline, where they attach themselves, grow into spiny creatures and live out a slow-moving life that often exceeds 100 years.“These sorts of studies are absolutely crucial if we want to not only maintain healthy fisheries but indeed a healthy ocean,” says Jason Hodin, a research scientist at the University of Washington’s Friday Harbor Laboratories.
staff.washington.edu/hodin/
depts.washington.edu/fhl/
Sea urchins reproduce by sending clouds of eggs and sperm into the water. Millions of larvae are formed, but only a handful make it back to the shoreline to grow into adults.
--- What are sea urchins?
Sea urchins are spiny invertebrate animals. Adult sea urchins are globe-shaped and show five-point radial symmetry. They move using a system of tube feet. Sea urchins belong to the phylum Echinodermata along with their relatives the sea stars (starfish), sand dollars and sea slugs.
--- What do sea urchins eat?
Sea urchins eat algae and can reduce kelp forests to barrens if their numbers grow too high. A sea urchin’s mouth, referred to as Aristotle’s lantern, is on the underside and has five sharp teeth. The urchin uses the tube feet to move the food to its mouth.
--- How do sea urchins reproduce?
Male sea urchins release clouds of sperm and females release huge numbers of eggs directly into the ocean water. The gametes meet and the sperm fertilize the eggs. The fertilized eggs grow into free-swimming embryos which themselves develop into larvae called plutei. The plutei swim through the ocean as plankton until they drop to the seafloor and metamorphosize into the globe-shaped adult urchins.
---+ Read the entire article on KQED Science:
ww2.kqed.org/science/2016/08/...
---+ For more information:
Marine Larvae Video Resource
marinedevelopmentresource.stan...
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#deeplook #seaurchin #urchins

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I like the narrator's voice. It's rare to find a narrator on KZbin who doesn't make me want to pull my hair out. She sounds genuinely interested in the science and knowledgeable.

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*me coming out of my room* “A miniature adult emerges”

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Mini moment

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@@Sournale your reply with your hotdog is cringe

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Watching this, I'm left speechless. Nature can come up with some pretty fascinating survival strategies, and odd life cycles.

[@coreydoyle4702]

True. It's amazing what can be done over ~3,550,000,000 years of evolution =)

[@kostiesaba3871]

That's a theory of course. And as with theories, they have yet to be proven.

[@chillsahoy2640]

Kostie Saba Yeah, true. I'm still waiting for the theory of gravity to be proven. Unless they give exact proof of it, I'm not going to be convinced that objects with mass attract each other through the bending of space-time.

[@kostiesaba3871]

It is your choice. I have chosen to believe the theory of gravity, although it is just a theory. You see, we all have choices to believe what we want and seek the truth. But I must say, an Ad Hominem disguised as sarcasm online is hardly a way to bring a point across.

[@coreydoyle4702]

Kostie Saba You must explain how what he said constitutes an ad hominem. I think it's pretty clear he's attacking your position with sarcasm. In any case, these things are theories because they're proven. You don't have an opinion on the matter, and neither do I. Reality isn't what we believe it is, it's what we can empirically prove it is. So until you go out with mathematical knowledge and study the world, we will not suffer your ignorant proclaiming of "truth seeking". You're not "seeking the truth". You already have your narrative of the truth set. It's not reality, but it's what you want to believe. No thinking person cares what you believe, we only care about what you can prove. You have proven nothing, except your ignorance of scientific terminology.

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1:23 I will never open my mouth in Sea water again

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That explains why the sea tastes.... salty

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so they dont get aged or die unless get eaten? Jellyfish: hold my tentacles

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Turtle:eats tentacles

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I made that up

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Why doesn't this have more likes?

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CENTURIES!?

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Centuries.

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Some lEGENDS ARE TOLD SOME TURN TO DUST OR TO GOLD BUT YOU WILL REMEMBER MEEEEE REMEMBER ME FOR CENTURIESSSSS

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We hope so!

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My immediate thought at the beginning: “It’s like a little rocket ship!”

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Well. Now I know why the ocean is so salty..

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hey cuz of the salt now u realize it

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😔 oh Snooki I see you’re still on that.

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@@LY2030. if that's nasty imagine all the fish blood and human blood you drank and tasted at the beach especially since it's unable to be cleaned up cause sea water is too wide

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@@acxa8873 ewww And then all the rotting fish too

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Sea urchin: hello cousin Star fish: hello! Sea urchin: sorry but you're on my kelp! Star fish: lies! Sea urchin: kills star fish Me: 0-0

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is... this supposed to be funny

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1. Easy to Understand 2. No complicated narrating 3. Clear visual content Therefore, this channel is a good source of knowledge

[@LemonScissors]

They live for CENTURIES? What!?

[@hhds113]

100 to 200 years is a typical sea urchins life. Only to the red ones though.

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LemonScissors yup there like jellyfish

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Sharks in Greenland can live over four hundred years, though! ;)

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Wikipedia and other sources says most common is 30, but some lived 200

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Vaporeon Eevee their*

[@o_o-037]

Sea otters have hair so dense, that every square inch of their bodies possesses as many strands of hair as a human's entire body. That's why they're so warm in the water

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Exactly! We have a video all about this: kzbin.info/www/bejne/kKnUmJKropaHjqs

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They're also very slippery bois

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Kinda like your mom

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[@moosedraw3731]

Wait but this is about sea urchins...

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The girl: The sea urchin is now practically immortal Me: I wanna be a sea urchin when I grow up

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very informative and educating video, thumbs up

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What business does one have disliking a video like this?

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Some people just want to watch the world burn :(

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why would they dislike this video? humans are never satisfied

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**some* humans are never satisfied.

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The dislikes are most likely inadvertent misdirected clicks - fat thumbs on touchscreens.

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Illiterates who want to watch MMA blood only

[@W.E.N.D.I.G.O]

you should make a video on sand dollars. suprisingly not many people know what live ones look like

[@W.E.N.D.I.G.O]

everything has a reason and that means that theres something benefitting the larval urchins shape. and my question is what the benifit is

[@nightbane2889]

Probably good for drifting on ocean currents and landing. Why their may be better forms/ways it seem this one works best for the urchin. But that just a guess

[@W.E.N.D.I.G.O]

Nightbane Strongarm oh ok tnx

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ay!!!! found a fellow Touhou fan

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Exaflare Bahamut yaaaaaas tuhu 4 life

[@___jisoochrist]

When she said "sea star" I forgot what a star fish is...

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Teenager sea urchin: *ItS nOt JuSt A pHaSe MoOm!*

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Ok ko in a nutshell

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Go Steelers

[@raygun1809]

Gotta go the sea coz i'm "soul seaur-chin" see what I did there?

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I sea what you did there

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I sea what you’ve done. Whale, you do that, I’ll go now.

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I want Amy to narrate my life

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I want Morgan Freeman to narrate my life...

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She is like the female Morgan Freeman

[@AidenOcelot]

greg77389 as Greg gets up out of his bed, he quickly raids the fridge and returns to his nest. If he fails, he'll be forced to chat with his relatives. god speed and good luck greg

[@cirian75]

@@AidenOcelot In Morgan Freeman's voice

[@surayyaibrahim180]

Ya it make sense

[@AlgerianTalk]

Can we get the secret of immortality from this thing?

[@somarpaarsasongtham7014]

I've heard that scientist are working on them, but using starfish on making new organism to replace for our injured or lost from accident. But that's about 5 years ago that I have heard.

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IM HOT IN REAL LIFE

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@@s.a.mckernan3684 hahaha

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You just have to turn yourself inside out.

[@craighoover1495]

My invertebrate zoology collegiate education was inland, in Idaho. I spent one week along the coast on a class field trip during spring break, in Coos Bay OR mostly lying on the dock looking at the encrusting organisms on the dock. We tried looking at plankton from tows and collected from various habitats. The textbooks and teaching materials at the time (late 70's) served to pique my long term desire to learn and see more. This video serves in my retirement years now, as fulfillment of those desires. You have my sincere gratitude and best wishes to produce more such work.

[@flick.youtube]

HER VOICE 😉

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so sexy..

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annoying

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I also find it annoying actually

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I would rather listen to this voice than listening to a some kind of robotic/siri voice.

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Watch your hand pls.

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655-1 Like to dislike ratio?! THAT is the best I have seen of any video! Awesome work!

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I was about to say that. This video doesn't deserve those 2 dislikes :(

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28 blind people tried to like :(

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Maybe watched it upside down....

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1:10 Oh, so that's why ocean water tastes so salty!

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Bro-

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This post right here officer

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Whales after they see this video : Hol' up

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you just had to didn't you

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*Your fascinating productions are exemplary!* 👍

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Hi

[@sadaasda4147]

With the sheer amount of poorly executed trite that is shovelled our way, it is so rare to find something that stands out. The cinematography was stunning, the VO was concise and entertaining. I really do wish more YT channels put this much effort into their videos. Thank you for the video.

[@KQEDDeepLook]

Thanks for the compliments!

[@DUBSkyLinEx3]

The Level of Quality is amazing!

[@KQEDDeepLook]

Thank you!

[@neshant89]

Amy your voice is so pleasing and amazing. Made me see more of these videos.

[@maryrose8478]

This is one of the most fascinating videos I've ever watched. Thank you. I actually stopped reading the comments to concentrate on the video.

[@kittyxx1326]

i just find it cute how the eggs and sperm just find one another in the ocean like as if they were destined to meet each other in the big deep ocean

[@bigmeaty9000]

weird take but i agree

[@RinoaL]

weird and amazing.

[@tswift9077]

Yea its is

[@captinjack1246]

Baby urchin looks actually just like a space landing shuttle. How beautiful they are.

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Awesome work. Keep making more such fantastic videos!

[@Jabrils]

i love deep look, & extremely admire your production

[@KQEDDeepLook]

Thank you sir - really appreciate it! Glad to have met you at VidCon.

[@a.fakename1686]

This is really interesting to think about how long they live contrasted to how long they gestate and how easily it is for them to mate. I just did about a half hour's research on the topic and can't wait to share it with you haha. Basically if you don't know this or haven't noticed this in nature, animals have two effective ways to mating and staying on this planet and it can be categorized into the r/K theory (and can be coupled with precocial and altricial tendancies in a species but we'll get to that later). r theory (which I remember by "r is for rapid") is easily explained by say mosquitos. Mosquitos live for barely weeks at a time but when they do the do they have not only a family but a FAMILY, like hundreds; the same can be said for many insectoid animals and infact many animals hat just have shorter life spans or expectancies. r strategy also involves a much shorter time to gestate before birth and mature into adulthood. And then you have K strategy (which I remember by "k is for kinship") that is employed by humans, whales, primates, elephants etc (usually larger animals that don't lay eggs). K strategy is when an animal takes a long time to gestate in order to give birth and a long time for that offspring to develop into maturity. Going back to precocial and altricial however, now that you know the r/K strategy, precocial is defined as already being born with the necessary tools of survival and the know how to use them (as seen in sea turtles, insects and varrying other animals). This means that you have no older matriarchal or patriarchal figure to guide you and teach you to survive in this world as they have either died or gone off to make more tiny thems but it wouldn't matter becuase you already have the instincts needed to survive. Altricial however, you are born often basically helpless with barely the motor skills to function normally and require one or more parental figures' assistance for a prolonged period of time to learn how to live on your own. The urchin's method of reproduction is a mixture of K strategy and precocial behavior however which is what made it so interesting, it lives for centuries so it has the ability to raise a lil pupil but its reproductive system is a largely r strategy system. Its young are primarily precocial yet also k strategy though as they take a while to gestate but do so entirely on their own. I hope you learned something from this and if you made it this far then thank you and I would love to read your feed back and opinions on both the subject and my information on the subject.

[@balthazarmayrena600]

Very interesting :)

[@Politickticktickin]

cool.nothing much to say, it is what it is.

[@bacon_sammich2845]

That is a super interesting observation. I for one didn't know that urchins can live so long.

[@vladyudashkin1471]

The music is beautiful. Made me feel the goosebumps and a smile on my face.

[@okman9684]

0:24 "Houston we have an Urchin"

[@XxLilBxX1]

Pyukumuku needs to be thrown back into the ocean!

[@MidoriFlygon]

pokemon can be inspired by multiple animals/things. bulbasaur is a cabbage/dinosaur/turtle. flygon is a dragon/dragonfly/antlion/mayfly.

[@adhityarisyad5707]

+patelike and somehow flygon is not a bug type.

[@Just_a_Goth]

BoyWonder Pyukumuku is a sea cucumber...

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BoyWonder I didn't there's a a cucumber under the sea... Can we eat them?

[@rrilex12]

Pikachuloves Minecraft. I love Minecraft. Coincidence !? yes

[@MrAntieMatter]

Respect for urchins up a hundred fold.

[@savagegamer4448]

Her voice is very soothing. Plus I learned something new follow

[@mercysdesire]

Everything was so pleasant and peaceful. Even the voice. 😌😌😌

[@madisonland290]

This is beautifully narrated

[@KQEDDeepLook]

Thank you, Madison!

[@DaMagnificentShazaam]

"Sea urchins can live for century's practically immortal"

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sea urchins take over the world

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this channel is sooo good. great camera work, and great narrator! deserves attention.

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I cannot put into words how much I love this yt channel ❤️

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You guys are amazing! I cant help but be astonished at your works! Great job as always :)

[@KQEDDeepLook]

Thank you for the kind words, Teejay. Do you have a favorite episode?

[@carpediem5106]

+Deep Look Well, i would consider the glow worms video my favorite. I cant imagine how hard it is to capture those footage. The effort you guys bring in every video really deserves more subscribers

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+Darwin Turner _I'm not TeeJay but my favourite is the episode regarding the squid skin._ The correct answer is: *ALL of the episodes*.

[@anomalapithecus]

I have been waiting for a video series like this for ages. I love it! They're like exquisite museum exhibits, each and every one. Thanks!

[@pinnacleexpress420]

way more interesting than anyone couldve ever expected. a great video.

[@greggers5988]

fascinating... also that soundtrack is enchanting and haunting in a really good way

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This channel is amazing, i enjoy every video you guys post you deserve more recongnition. keep it up!

[@KQEDDeepLook]

Thanks! Hope you enjoy!

[@coreydoyle4702]

This is one of the few channels that I consistently feel compelled to "like" every video that's released. Literally every video is interesting, and full of interesting information. I hope you're all making the money you deserve for this excellent content. - Cheers

[@KQEDDeepLook]

What kind compliments! We're a nonprofit, community-supported public media station in San Francisco- KQED. We love bringing these videos to you!

[@TheLearningLounge]

This was wonderful!!! Thank you!

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this was so peaceful and humble, I feel happy watching this :)

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this channel deserves more views

[@coolmdj111]

Dayumm... Man am I glad I subscribed to this content! Btw what planet was *this* shot on? Looking forward to marvel at more these videos.

[@TemperanceL2]

Yeah, most things living under the sea really make us feels like they're from another planet, probably because of how different they have to be to live underwater and how we, living on the ground, aren't used to this at all.

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Archeron

[@RememberVietnam]

I think it was earth but it might be mars so idk.

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very positive it was Venus, or Kepler

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Uranus

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I love her voice😌🥰 It instantly relaxed my body😌

[@jhonalcantara7146]

I like how the way she tells it it really explains well

[@sir_clovis8291]

How the hell dislikes this? These are some pretty impressive shots, far better than what anyone will see in your typical nature documentary.

[@mikewazowski9757]

"Having survived the long offs of youth, It's now practically immortal." Up next in autoplay: 3 Ways to Crack an Urchin

[@androidrocks7235]

I love how the narrator speak. Its so relaxing ang knowledgeable

[@tapgaming4360]

"A baby sea urchin..." "Here is what it will become: an adult sea urchin"

[@Redjacket14]

I heard turbulent and plumbus within this narrative.

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where did you hear plumbs and what does that mean? is it from rick and morty?

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lovelymeforeverful yup

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Plumbus. everyone has one but do you know how they're made.

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Leftover schleem can be repurposed for later badges

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2:13

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damn this channel literally calms my ADHD I love it so muchhhhh

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medication literally calms mine.

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have you tried cocaine`?

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Brooke Jones ADHD squad

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so my 3 year old cousin just want attention because he has adhd? smh

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Clear video, smooth show, gud quality and learned something. It's awesome👍💖

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i love the narrators voice.... its like telling a story to a kid♡

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Just binge watched every episode, this is amazing!

[@KQEDDeepLook]

Glad you like it, Sebas! Tell your friends.

[@Jayeeyee]

That sea urchin looks oddly similar to the Lunar Lander Module

[@TreeTopley]

Original observation...

[@GraveUypo]

good thing no one else ever thought of that and that it wasn't mentioned in the video

[@xuanz2514]

Jayee 1:38

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God thought of it before we did lol

[@quizilla]

her voice is so nice and clear.....

[@levnzt6949]

Thank you very much for those beautiful pictures and the catching voice

[@bambooexpress]

This look like some outer space type of stuff. Incredible quality footage, subscribed right away!

[@UnderratedSpaghetti]

I never knew they lived so long. Really fascinating video thank you for having an awesome channel!

[@danielbilbs6003]

The best documentary channel!

[@CessieInVancity]

They are the cutest little cuties ever!

[@hugo123martinez]

This channel really underrated everything is beautifully well crafted I’m in awe every time I see a new video when it goes up. Love love love this channel ♥️

[@KQEDDeepLook]

Thanks Hugo!

[@learnchinese8798]

This video is so soothing and informative! Thank you so much for a great ocean story :)

[@dennislaw2135]

Loved the sweet narration, more please.

[@chrismendoza6115]

Now that's spine tingling.

[@Jammerjoint]

You guys really have a great eye. Beautiful images.

[@carmennobre]

this channel is the best ever i am crying so much right now life is GREAT

[@KQEDDeepLook]

Carmen, thanks so much. This makes our day.

[@valken666]

It's great to be eaten alive, your guts being ripped apart... Nature is so exciting.

[@d3g3n3r4t3]

and along comes a human, likely on a beach in japan, and then he takes u home and cuts u open, cooks u, then eats u XD

[@majed_sa966]

Heaven Is Much Batter

[@dontalkt2meboutheros]

I'd say with her choice of words that she's already in heaven. :)

[@jonre1536]

Sea Urchins turn themselves inside ou... *I'm BeiNG BoRN*

[@laurie2735]

After binge watching your videos you have earned yourselves a new subscriber :3

[@asduffqwerty]

Haven't watched the video and I already know it's gonna be good, keep up the good work :)

[@rinbrennan773]

3:01 when you're feelin crabby but still cute

[@SlRENN]

"As it grows...it takes on the shape of a lunar lander" Best thing I ever heard from a bio video!

[@3milk207]

She has such a great voice for this it makes the whole video worth watching

[@moran9972]

This is very interesting! And I love how detailed the videi was and the voiceover was amazing!

[@KQEDDeepLook]

Thanks, Maria!

[@moran9972]

Deep Look you're welcome😊

[@TheChimcharfan123]

Wow DeepLook another amazing video I look forward to them all the time, I learn so much

[@KQEDDeepLook]

Awesome!

[@ryan-it4]

it's so cute knowing a little space rover like egg is around the ocean

[@ItoNarasimha]

Okay but can we talk about how amazing this narrator is

[@mushroom_latte]

do more ocean stuff! this is a cool place in youtube

[@KQEDDeepLook]

Will do. Thanks!

[@danielcoupland4620]

This channel is honestly amazing. The production value is really good for a channel with 100,000 subscribers! Keep it up!

[@muffintime907]

Underrated channel Absolute top tier quality

[@DPS1194]

That takes a long distance relationship to a whole new level.