There's no such thing as a jellyfish

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MBARI (Monterey Bay Aquarium Research Institute)

13 жыл бұрын

By all accounts, jellyfish are creatures that kill people, eat microbes, grow to tens of meters, filter phytoplankton, take over ecosystems, and live forever. Because of the immense diversity of gelatinous plankton, jelly-like creatures can individually have each of these properties. However this way of looking at them both overstates and underestimates their true diversity. Taxonomically, they are far more varied than a handful of exemplars that are used to represent jellyfish or especially the so-called "true" jellyfish. Ecologically, they are even more adaptable than one would expect by looking only at the conspicuous bloom forming families and species that draw most of the attention. In reality, the most abundant and diverse gelatinous groups in the ocean are not the ones that anyone ever sees.
To report sightings of jellyfish and other marine organisms, go to jellywatch.org/

Пікірлер: 610

@MBARIvideo 12 жыл бұрын

We're happy to hear that you enjoyed and learned from our video. Also, thank you for the suggestion about transcribing our videos for the hearing impaired. We've added captioning to this video and will do so for all of our future KZfaq videos.

@niamtxiv 3 жыл бұрын

Thank you

@galaxiaknight 2 жыл бұрын

Thank you so much for the captions. Great work

@btkeller93 2 жыл бұрын

Thank you for the captioning! It's so nice to have when your tossing new scientific names at us. Makes it easier to remember.

@kjekelle96 2 жыл бұрын

Nice video. Would you like to share the soundtrack please?

@MBARIvideo 11 жыл бұрын

The Narcomedusae are the jellies whose tentacles point ahead of them instead of pointing behind like most jellies. The little yellow one in the video with 4 tentacles pointing ahead is called Aegina citrea.

@brianlaroche8856 2 жыл бұрын

That agressive narco-medusa. Cool

@MBARIvideo 11 жыл бұрын

A jellyfish has a ring of muscle around its bell. When a jellyfish tightens this muscle, its bell closes. This pushes water inside the jellyfish out, shooting the jellyfish forward. As the muscle relaxes, water refills the bell. This is how they pulse in the water. Each tentacle can be moved by its own muscles, as can the oral arms. Jellies have a nerve ring that connects the rhopalia (sensing organs) and a nerve net that can send messages around the bell to contract and release.

@mikewhocheeseharry5292 2 жыл бұрын

So jellyfish doesn’t have flowing blood used to contract its muscle but instead uses the water?

@mikewhocheeseharry5292 2 жыл бұрын

@Marve Lous lol, jellyfish is a giant anus.

@raccoonchild 2 жыл бұрын

@@mikewhocheeseharry5292 Wait until you find out you have more than one sphincter in your body

@mikewhocheeseharry5292 2 жыл бұрын

@@raccoonchild I know we other sphincters. They’re like valves that can open or close to control the flow of substances through the tube or passage. The anal sphincter somewhat can be visible as the others are inside our bodies.

@raccoonchild 2 жыл бұрын

@@mikewhocheeseharry5292 I know, I was just messing with you. It's cool.

@penand_paper6661 5 жыл бұрын

The comments here are mostly missing the point. They say "well, if there are no jellyfish, then what are they?" The video is not here to say they don't exist - the video is only here to say that "jellyfish" is not a taxonomic term. A classic sea nettle, for example, is a jellyfish, but closely-related corals are never called that, while Comb Jellies are sometimes called jellyfish. You see? The term "jellyfish" is not very helpful as a taxonomic description. It would be better to call some of them "medusae", others "comb jellies", and so forth, as the term is mostly just aesthetically descriptive. Shoutout to @moara for actually making an educated definition and defence of the term (unlike most of the commenters).

@raccoonchild 2 жыл бұрын

People on KZfaq comment sections aren't exactly known for their viewing/reading comprehension.

@slenderman3310 2 жыл бұрын

“aesthetically descriptive” you mean it actually describes the organism? unlike taxonomic definitions which are so broad you could say humans and fish are the same? Be careful with with what you say man.

@davidh.4944 2 жыл бұрын

@@slenderman3310 _...unlike taxonomic definitions which are so broad you could say humans and fish are the same..._ Except that scientists do *not* say anything like that. Modern cladistics (which is in the process of replacing the old Linnaean taxonomy) simply, and strictly, catalogs organisms according to ancestry. Every creature descended from a common ancestor is viewed as belonging to a single clade. Clades slot naturally into nested hierarchies, with clades of more closely related organisms being nested within those of broader, more generalized ones. Yes, it is a fact that "fish" and "humans" are both (at a minimum) members of _Animalia_ (animals), and _Chordata_ (creatures possessing nervous systems). One branch of _Chordata_ did evolve into _Osteicthyes_ (bony fish). One branch of that became _Sarcoptergii_ (lobe-finned fishes). One branch of that became _Tetrapoda_ (four-limbed vertibrates). And one of the many, long-evolved tetrapod descendants is _Homo_ (us). But none of that means that "humans" and "fish" are the same. It only means that both groups share a common ancestor somewhere in the long distant past, and can be considered long-separated (~380 million years) cousins. However, that brings us back to the OP, who correctly pointed out that words like "fish" and "jellyfish" are casual, paraphyletic, terms, meaning that they are hodge-podge categories that do not accurately describe their members with any kind of formal accuracy. By "aesthetically descriptive" (admittedly an odd choice of words) he meant only that people have generally categorized these groupings through superficial visual similarities (i.e. "it looks like a fish to me"), as opposed to scientific taxonomy, which takes a much more detailed and nuanced approach that focuses on how creatures are actually related. If you are at all interested in really learning something about scientific classification of humanity, go find Aron Ra's 50 part _Systematic Classification of Life_ series. It literally goes step-by-step into how the earliest life eventually became "man" (and many other creatures along the way). It is long, but well-worth the time spent watching.

@rem520 2 жыл бұрын

Still a shit take made on purpose as clickbait

@justaway6901 2 жыл бұрын

@@rem520 If its educational, its called piquing interest. You need to be curious in order to actually learn

@mahna_mahna 2 жыл бұрын

I feel like the title of this video is a nod to Stephen J. Gould's statement that "There's no such thing as a fish!" He was also referring to convergent (and divergent) evolution of multiple branches into things we all lump together as "fish." (This came to a much wider awareness when it was quoted on the QI panel show.)

@megaball-ps8tq 2 жыл бұрын

Those creatures always fascinate me, there are also a lot of so called “jellyfish” that haven’t been discovered yet. Maybe someday we might discover more species of these deep sea creatures.

@Bluebelle9289 13 жыл бұрын

People go on about aliens in space but they so often neglect the aliens that live right here on earth in our oceans. It really is a whole new world.

@Triggernlfrl 2 жыл бұрын

I am curious how jellies and all other animals will be or will they be gone when in the new world to come. Know only some humans that can adapt can be in the new system free world. Maybe we make new animals or let adapt some old ones?

@TzadikTheManic 3 жыл бұрын

This video is perfection in every way. Footage, information, the subtle audio track.. I’ve been subbed to this channel a long time, how I never got to this magnificent document until now I know not. A gem

@jacobs4545 2 жыл бұрын

He sounds like he's about to fall asleep

@moara4144 9 жыл бұрын

There is such a thing as a jellyfish. It's the medusa stage of any Cnidarian. Everything else is gelatinous zooplankton or sea jellies, but not necessarily jellyfish. Folk taxonomy does not have to follow the same rules as scientific taxonomy. Jellyfish can be a polyphyletic grouping and still be valid in people's conception of life. As long as people realise it's a cultural term, and not something based in our current scientific classification system, I don't think there's a problem using "jellyfish".

@notinusesoon4975 9 жыл бұрын

Do tell more.

@Voidmager 9 жыл бұрын

moara I am assuming this video is targeting the more simplistic view of most people, as I flatly refuse to believe that the creators are blind to this. I sincerely hope that these aren't the discussions that go on at a research institute, considering the abundance of organisms in this environment with gelatinous bodies. I'm not going to lie; I felt rather insulted/surprised when they tried to make an arguments for tunicates being jellyfish, and it only got worse from there.

@jaisrikrishna5173 7 жыл бұрын

Voidmager v

@padstowbeach 5 жыл бұрын

preach think they were going for colloquial opinions

@otubaraovaitepegar 4 жыл бұрын

Perfect

@ChatMort69420 6 жыл бұрын

This was fascinating. Thank you!

@cometkite 9 жыл бұрын

I don't think anyone would call tunicates or polychaetes "jellyfish".

@beroe01 8 жыл бұрын

+cometkite You wouldn't think so, but people lump salps in with jellyfish when it is convenient. www.sciencedaily.com/releases/2012/02/120201181222.htm

@CyclopsRat 5 жыл бұрын

same with molluscs.

@nettleclips 12 жыл бұрын

That one with the strobing colored lights just blows my mind. How crazy is our world that we have fish that have adapted to strobe colored lights underwater? Science is so awesome.

@a_case_study 3 жыл бұрын

Thank you so much that video presentation was a work of art, and a testament to the work of all of those who worked together to capture this incredible deep sea footage. 👏🏼

@newtagwhodis4535 2 жыл бұрын

Beautifully made and extremely well narrated! Thank you very much!

@KendrickSF 12 жыл бұрын

I especially appreciate the nomenclature assistance via the graphics. This is a really nicely thought out and informative video. Thanks for this KZfaq channel and and for Jellywatch! PS. Please consider regularly transcribing your KZfaq videos for the hearing impaired.

@AcanLord 12 жыл бұрын

Lovely video. its shame it dident go into further detail discuss some other scyphozoans such as the Rhizostomae. they are pretty different looking when you compare them to the semaeostomae. or has there been some revisions to the taxa since last i checked?

@Jennirn2005 9 жыл бұрын

I love this channel but this was one of the best videos. I really hope to see more in this style. It was very educational and interesting to watch. I love learning the names of these animals and where they fit in the tree of life, GREAT video. Thanks!!

@galaxyspirals9595 7 жыл бұрын

Spongebob disagrees.

@Hmongboi228 5 жыл бұрын

One of the facts that I found to be interesting while learning biology in college is that some "jelly fish" can essentially be eternal. Going from the polyp stage back to the medusa stage. Medusa stage back to the polyp stage..

@bezoticallyyours83 3 ай бұрын

When you are your own grandparent 😅

@JCasR3 12 жыл бұрын

it always blow my mind how a sea of microbes looks just like the vastness of space.

@megamanhikari8095 4 ай бұрын

not really

@johncrwarner 13 жыл бұрын

Wow, I learnt something - a beautiful video about several groups of impressive animals - I was unaware that some fundamentally different animals would be evolutionarily convergent - having a jelly form. Thanks for this video.

@MagikFingers420 2 жыл бұрын

Learned

@johncrwarner 2 жыл бұрын

@@MagikFingers420 As a speaker of a non-North American variant of English I spell the past participle of "to learn" as "learnt" and reserve the spelling "learned" to be an adjective which I have to say I associate with the British parliament where members of parliament who are qualified lawyers are referred to as "my learned friend" even by their bitterest opponents "learned" is pronounced differently "LER-ned" I do not in my variant of English claimed to be learned but I did learn something I hope through this exchange you might have learnt something too.

@KeivanHH 11 жыл бұрын

I didn't expect there was such a variety of jellyfish... This video is amazing!

@igordemelo4128 2 жыл бұрын

The way the video was crafted and overral produced almost made me cry of joy. Dunno. I love beautiful things

@calin4thewin 12 жыл бұрын

Excellent stuff. I'm gathering some reference photos of these things, to study them as training for visionary art. The names help a lot. Fantastic source of inspiration, thanks for uploading.

@evan8654 5 жыл бұрын

Blows away most all nature channels in such a low-key way!!!

@thomasdavey1513 2 жыл бұрын

Please make more in depth videos about each, including as much footage as you can. The footage is amazing, I could watch these jellies all day.

@kellydalstok8900 2 жыл бұрын

In depth - pun intended?

@thomasdavey1513 2 жыл бұрын

@@kellydalstok8900 to be honest i didn't notice 😅

@9frits 13 жыл бұрын

Wonderful, even for insiders!! How do you know about the 1080p HD setting?

@afa78djd 10 жыл бұрын

Terrific video man. I always thought the same. It always seemed to me the term "jellyfish" was just lazily thrown out there for the meantime, while these gelatinous-like organisms from every branch of life were truly and more accurately classified.

@oliverholm3973 2 жыл бұрын

This was super interesting but also you have a great voice, overall good video

@davidknoxusanet 11 жыл бұрын

Hello, I loved the video. The question I have had for ever is how do the jellys produce that pulsating rhythmic movement? I imagine it is not a nerve impulse to muscle cell activation mechinism, so what is it?

@ArtemiyPavlov 12 жыл бұрын

The video is brilliant! Thanks very much for such detailed information. However, the subtle tone of the narrator's voice and meditative music are making things a bit sleepy at the end.

@daievans2637 4 жыл бұрын

The one at 3:09 is amazing

@czechmix221 2 жыл бұрын

I really like the straightforward, no nonsense narration

@1029blue 13 жыл бұрын

Thank you so much for uploading this very educational video. I learned the basics about cniderians, mollusca, and polychaetes in my Zoology course, but it never occurred to me that they could be bunched together as "jellyfish".

@MBARIvideo 11 жыл бұрын

Exactly!

@mfoutz 13 жыл бұрын

Jellyfish awareness - Awesome video! Explains the difference between vastly different species that we generally lump together.

@davefoc 4 жыл бұрын

The term jellyfish is ambiguous, but I am not sure that in common usage it is ambiguous as is implied in this video. I think in common usage it is limited to members of the cnidarian phylum that have a medusa stage or it is limited to describing cnidarians that are in a medusa phase of the organism's life. The meaning of the term "jellies" which was perhaps intended to replace the term "jellyfish" (for dubious reasons IMO) seems to have been extended so that it now is a term that describes creatures that have gelatinous bodies but I have never seen the meaning of the term, "jellyfish", extended in a similar way except in this video. Regardless, the video was great. Thank you.

@SupahTrunks7 2 жыл бұрын

I remember going to the Monterey Bay Aquarium as a kid and being so entranced by the jellyfish exhibit (tho I know it probably contained many organisms that may or may not fall under that untaxonomic description). I would love to go back at some point.

@lorettomccartney6295 6 жыл бұрын

Thank you for this wonderful video. I have not heard this vocabulary pronounced since college. Back in the day we rarely had such good video to augment the text books.

@moon_0207 3 жыл бұрын

I love every group of jellies. They all look so cool!

@vandarkholme4745 6 жыл бұрын

Well organized and narrated!

@Weirdkauz Жыл бұрын

Could listen to this voice all year. But even better would have been much more, longer, screen-filling jellyfish in between the diagrams. Jellyfish is a legitimate nomer for see-through sea-creatures in situations where transparency is of supreme interest, I’d say. 😉 Thanks for the content!

@david.thomas.108 2 жыл бұрын

I needed this video, thanks.

@Yezpahr 2 жыл бұрын

Slowly but surely the algorithm is learning to dig up old videos... I'm not disappointed.

@noahmckinnon 13 жыл бұрын

Beautiful and informative. Love that you've got an HD option. (Here via BoingBoing)

@gailhowes9398 2 жыл бұрын

Thank you for another interesting lesson as I live inland in western Canada and have only been to the ocean twice!

@kahlilgarcia3995 2 жыл бұрын

This is one of my personal favorite videos on the internet

@LVXMagick 2 жыл бұрын

This is a fascinating video. Thanks!😊

@otakucode 13 жыл бұрын

I want all of your source video. ALL OF IT. I want beautiful HD videos, hours long, of these phenomenally gorgeous creatures. How could I even begin collecting such video?

@Trazynn 13 жыл бұрын

@polishlanman He's surprisingly relaxed for someone who cares so much about jellyfish.

@kellyandrichweddle2425 6 жыл бұрын

Nicely explained topic and great visuals!

@veewaiyawuth2063 2 жыл бұрын

Crab: everything evolves into me. Jellyfish: hold my beer.

@franknblunt 13 жыл бұрын

Pretty much kept to the animals but five minutes packed with great info that should motivate to learn more about a bevy of fascinating creatures and their distinguishing characteristics. Even transitioned among various pelagic zones from the basal soup at the surface layer to the depths where Ctenophores are like beacons in the darkest night.

@franknblunt Жыл бұрын

Ctenophore, scyphozoa, siphozoa, cnidaria, ... But yeah jellyfish🐙😁

@proximacentaur1654 3 жыл бұрын

That was fascinating. Thank you.

@sforzandofilms 13 жыл бұрын

These are probably the most beautiful aquatic creatures I've ever seen :)

@_ninthRing_ 2 жыл бұрын

Remarkable. So much stunning diversity. Also worth noting is how many jelly-like organisms can also be classed by how they just go with the flow, or have any one of a plethora of methods of maneuvering themselves through the water. Definitely avoid *Box Jellyfish* - those weird twelve-eyed lethal hunters, with millions of nematocysts both on their bell & metre-long tentacles - especially the nightmarish *Irukandji* ⊚. _If you visit _*_Australia_*_ (northern _*_Queensland)_*_ & see the signs warning you not to swim at that beach, bloody well pay attention..!_ ⊚ Which apart from causing unbelievably agonizing welts & scars, tachycardia & increased blood pressure, also comes with a range of psychological effects, including the terrifying "Feeling of Impeding Doom", which has almost driven people to suicide...

@UnionParkPlumbing 3 жыл бұрын

Absolutely beautiful!

@beroe01 13 жыл бұрын

@bort3000 Agree about worms -- originally was going to include Chaetognaths and Nemerteans, so labelled the branch generically.

@kjekelle96 2 жыл бұрын

Does anyone know the soundrack of this video please?

@darwin-evolution3948 8 жыл бұрын

You forgot to mention the staurozoans.

@idkjustleavemebeplease 2 жыл бұрын

This might be un-scientific, but I refuse to believe that mushrooms and jellyfish are not directly related.

@ardellolnes5663 5 ай бұрын

Very clever I like your logic

@beroe01 13 жыл бұрын

@wetterdew The song files are posted on the jellywatch site under /video (Can't post the URL in comments.)

@rushianokun 13 жыл бұрын

PLEASE MAKE MORE VIDEOS LIKE THIS, BETTER THAN ZOOLOGY CLASS!!

@AdamCantor 13 жыл бұрын

amazing footage

@tsdiggs78 11 жыл бұрын

The ones with the different color lights look cool

@barbballa2823 2 жыл бұрын

What a great video. Thanks!

@RonHutchCraft2 2 жыл бұрын

Irukandji jellyfish... i was watching you're video and i remembered a documentary from several years ago that focused mainly on the very dangerous but small Irukandji jellyfish. found mostly in Australia. i hope never to experience the affects of being stung by one as they are difficult to spot and extremely painful. even fatal in some cases. thank you for this great video. 🎐😱

@1RetroMetro1 13 жыл бұрын

Bad ass, I wish I could just sit all day to some music and glance at them all day

@BelugaWhaleBoss 2 жыл бұрын

What is the one at 00:37? I love it’s chonky tenticles! 💕

@outofthegreenmist 13 жыл бұрын

Very good. As always.

@ImSofaKingGood 13 жыл бұрын

3:50 It's like it's a single animal but it's like it's not... I figured stuff like that existed but to see it in such a ghostly form is really trippy.

@davidknoxusanet 11 жыл бұрын

Cool , so there is a connection through the nerve ring from sensing organs to oral arms , bell and tentacles, without the need of a brain allowing the jelly to respond to environmental stimuli ?

@ViewTube_Emperor_of_Mankind 2 жыл бұрын

Feels like sentient plants.. or what feels like the step between plant and animal. Very cool

@blackpinkluv9869 2 жыл бұрын

I love how some jellyfish look like objects we use on a daily basis

@alveolate 13 жыл бұрын

thanks for the pronunciations!

@alexgrweahae6892 3 жыл бұрын

So, why you all still got the jelly cam running?

@splortz 13 жыл бұрын

Damn. Steve the narrator sounds just like Kevin Spacey as Verbal Klimpt in "The Usual Suspects". Amazing. Amazing clip, too.

@TheJorjj 13 жыл бұрын

Does anyone know the backing track? It's really relaxing :)

@apollofell3925 2 жыл бұрын

Fascinating!

@donnalewis3216 3 жыл бұрын

Beautiful and fascinating

@TheFreshSpam 2 жыл бұрын

Nothing need to change about these videos but the LENGTH. LONGER PLEASE

@kdochce-vidi8540 2 жыл бұрын

Thank You👍🇨🇿

@farabor7382 3 жыл бұрын

Amazing and very informative :)

@mariakuijpers5308 3 жыл бұрын

Zo vreselijk mooi ongelooflijk ,het zijn Levende kunst werken prachtig 👍❤❤

@wetterdew 13 жыл бұрын

Is there a way I can find this song?

@Tropico1020 2 жыл бұрын

Very good video, thank you 👍

@allandnone4147 7 жыл бұрын

That was beautiful

@63striker 3 жыл бұрын

Welcome to the frustrating and challenging field of biosystematics

@pobblebonk1018 2 жыл бұрын

Fascinating.

@2020theGuitarPlayingRapper 2 жыл бұрын

MBARI: there's no such thing as a jellyfish Jellyfish: am i a joke to you

@Ninetysju 13 жыл бұрын

This is amazing, thank you!

@neataccount 2 жыл бұрын

This is going to end up being key as my life story builds to the climax.

@ErichoTTA 13 жыл бұрын

What's the name of animal that worms/molluscs/jellylike creatures etc. belong that are shown in that chart? I mean like fish, mammals, birds, etc. They're obviously in their own category, but what is it called?

@23skiddsy6 2 жыл бұрын

I can imagine people also might call a free-swimming crinoid a jelly, and tunicates/sea squirts can be pretty gelatinous, though they are sessile.

@luderickwong 2 жыл бұрын

this is some animals which old textbook (70s) didn't introduce much when i was a kid. we see them all the time, even eat some species, but with zero knowledge about it.