Eye-catching Translucent Tunicate and Sea Cucumber | Nautilus Live
Ғылым және технология
Even being translucent didn't stop these animals from catching our eye during ROV dives in the Pacific Remote Islands Marine National Monument. Meet the translucent tunicate and the see-through sea cucumber!
The first mysterious marine invertebrate is called a tunicate from the Culeolus genus. These sessile organisms and their shallow-water relatives are commonly called “sea squirts” due to their tendency to expel or "squirt" out water when removed from the water. Part of the Phylum Chordata, believe it or not, this ascidian is more closely related to humans than any other of our common seafloor sightings. Tunicates have a tough carbohydrate body tunic that surrounds their water-pumping siphons and other organs. Listen to our Corps of Exploration wonder at this extraterrestrial-looking underwater animal and the associated biodiversity living alongside it.
The second see-through sighting was a swimming sea cucumber or holothurian. Certain sea cucumbers can take flight to avoid predators and move to new seafloor locations for feeding. Lit up by ROV Hercules' cameras, the details of the animal's mouth, gut, and tentacles can be clearly seen.
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Learn more about this expedition in and around Pacific Remote Islands Marine National Monument funded by NOAA Ocean Exploration via the Ocean Exploration Cooperative Institute: nautl.us/3NdSMFx
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Пікірлер: 67
Tunicates are our (vertebrate) closest non-chordate relatives! Some of them live colonially, they're awesome creatures. This little guy is our cousin :) Thanks for the video!
@Illuminatea
2 жыл бұрын
Jotaro taught you well
@mohsscale4220
2 жыл бұрын
It’s the other way around. Tunicates are chordates but not vertebrates, so they are our closest non-vertebrate relatives.
@nortongrey8901
2 жыл бұрын
@@mohsscale4220 yup, Tunicates and Vertebrates are in the class Olfactores together. The clostest non-Chordate relatives are (iirc) Ambulacraria like the Sea Cucumber in this video
@Roach_Dogg_JR
Жыл бұрын
@@Illuminateaunexpected jojo! Hopefully jotaro will commentate one of these livestreams.
I really like the text popups, names, depth.
Such beautiful and amazing creatures that we'd never get to see without these videos! I love to hear the delight and enthusiasm in your on-air comments too. Thank you for sharing!
Loving the live coverage, I really appreciate it, I'm physically disabled and having the ability to be along for the ride is magical, it really helps me feel like a part of the dive!!!
Thank y'all for upping the production quality on these videos - the graphics showing depth and measurements are really helpful!
I love Sea Cucumbers! They are so beautiful and fascinating. Thank you for sharing!
Awww the sea cucumber is so cute!
Thank you for sharing these highlights, I love the scientist's reactions to cool creatures :)
that first one was like a glossy bell🔔 glittercore Lisa Frank
How the hell have I never heard of these animals before? They are absolutely beautiful.
@IndomitableT
2 жыл бұрын
Well, that is alright. Most people on our planet have not.☺️
Favorite dance move lol
You folks have the BEST job!
Oh no another one so beautiful I teared up
① - What are the creatures inhabiting the *Tunicate..?* I'm pretty sure I saw a crab, some kind of bristleworm, but couldn't identify the third organism. Are these likely to be Parasitic (either consuming the *Tunicate* or stealing it's food), or Symbiotic (protecting the Tunicate from parasites or predators)..? ② - Why on Earth are the *Intestines* of the *Sea Cucumber* so prominantly visible? I know the transparent orange/red of the creature's jelly body & tentacles is due to the typical deep-sea camoflage, but the guts seem to spoil this - either fluorescing brightly under ROV's lights, or luminescing naturally. Could this be due to it's diet being high in luminescent microbes/copepods/squid/etc..?
@maandren
2 жыл бұрын
Great questions. I was wondering the same regarding the intestine lol. I hope someone answers it.
That ambient music on the video is really awesome. I think a big video, with highlights, and just that music without any speaking and commenting would be really great!
we love u EVNautilus :) (:
I love how the crew members are equally mesmerized by the wonderful creatures as I / we the viewers are :-D
Such lovely little fellers. Awesome finds!
I love to hear y'all getting so I excited. However, you are seeing some awesome things. Thanks for sharing
Oh my gosh, that's really scary what he's doing out there all alone
Enjoyed your video and I gave it a Thumbs Up for support
The cuke seems to be from the genus Peniagone! Beautiful footage!!!
Fascinating creatures!
Super awesome
This is amazing. I hope to do work like this some day.
Wow thank you so amazing
Thank you 😊
What a beautiful creature
Beautiful. Kiss from Angola 😘😘😘
Those stalked tunicates are probably one of the most surreal and otherwordly animals in the ocean, its just a head on a string stuck in a barren wasteland
Jo!, que bonito!
Question 🙋♀️ how come we still see rock on the ocean floor, I’d have thought after thousands of years of debris etc raining down it would just be a relatively flat plain of sediment and detritus
@maandren
2 жыл бұрын
Rock in the ocean is just like our mountains on land. Tough.
@NicolaiAAA
2 жыл бұрын
Because the ocean is constantly in motion. Currents, plants, and animal life also help to shuffle it around, along with the occasional earthquake to give areas a jangle. Plus there are also underground volcanic vents that create updrafts (for lack of a better word) which pushes water and debris up (I couldn't tell you how far though), and just like volcanos on land, they most likely move from one area to another due to the shifting of the Earth's crust. I'm not an expert, and I imagine there are even more things that happen that I don't know about. Lotta stuff going on on our planet. :3
Tunicates must be real life plumbuses.
How large do Tunicates get (someone asked)....quite large (hey, you are live, so your reputation is on the line), ....really quite big.....some what larger than other things..........any chance someone in the lab is prepared to use a unit of measurement to describe their size?
I want to see more creatures(:
@maandren
2 жыл бұрын
Yes, more creatures please‼️😁✨
Neat😃
Aaah yes the Ocean Metroid
Love the animals and the scientists commenting
If they only knew you guys are fan girling them they would blush
Very little flow down there eh?
Lol the subtitles keep calling them "tuna kits" and "tuning kids" and "tunicans".
@maandren
2 жыл бұрын
Tuna kits. 😂
Let me just say, that "pretty big" and "quite massive" are a bit vague descriptions...
Its ok, my spine is de evolving too.
I don't get it, the second doen't look at all like a sea cucumber to me...
Was that first one tethered to the rock?
@IndomitableT
2 жыл бұрын
She says it is sessile, so yes, that seems right.🪑😉
@dav1dsm1th
2 жыл бұрын
@@IndomitableT Today I learned that my lifestyle can be described as sessile.
Q: "How big is it?" A: "Pretty big" Thanks for nothing
What is "pretty large" ffs?
How big can they get ? They can get pretty large .... lol Yea that helps...
@maandren
2 жыл бұрын
Like about 12 in. I think 🤔
Tunicates are choradate bois
What was the red creature at the end? Was that another of the same creature as the first?
@IndomitableT
2 жыл бұрын
It is in the description.😌
@vertyisprobablydead
2 жыл бұрын
@@IndomitableT Wow thanks you spent that time not telling me anything.
@teaartist6455
Жыл бұрын
It says on the top right it's a sea cucumber, so no.
the second one looks like it just ate a bunch of Cheetos