The Alien World of Deep Sea Molluscs
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- čas přidán 8. 06. 2024
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Molluscs like cephalopods and gastropods dominate the marine world. Inhabiting nearly every ecosystem from shallow reefs to deep sea vents and the pelagic midwater, the success of molluscs is unparalleled. Nearly 25% of all marine organisms are molluscs, including such oddities as sea snails, nudibranchs, and coleoids like squid with their specialised tentacles. Even the snails you might find in your garden belong to the molluscs, for this is the only phylum with species found in the sea, freshwater and on land. A testament to their adaptability. With an estimated 85,000 living species known to science, the abundance and diversity of molluscs is what allows them to occupy a great many niches and habitats, and diversify into an assortment of shapes and sizes. The smallest meiofauna molluscs grow to just 0.4 mm long, while in the pelagic deep they dominate as voracious predators, looming out of the dark. This is the alien world of molluscs.
00:00 - Introduction to Molluscs
01:50 - Anatomy of Molluscs - Basic Body Plan
02:59 - Anatomy of Molluscs - Adaptations of the Foot
04:01 - Anatomy of Molluscs - Adaptations of the Shell
04:45 - Gastropods - Anatomy and Adaptation
05:49 - Gastropods - Life in the Intertidal Zone
06:39 - Gastropods - Defence Mechanisms
07:28 - Gastropods - The Scaly-foot Snail
08:29 - Gastropods - The Nudibranchs (Sea Slugs)
09:45 - Bivalves - Anatomy and Adaptation
10:20 - Bivalves - Infaunal Lifestyle
11:26 - Bivalves - Epifaunal Lifestyle
12:09 - Bivalves - Mussel Beds of the Deep Sea
13:46 - Cephalopods - Anatomy and Adaptation
14:31 - Cephalopods - Evolutionary History
15:43 - Cephalopods - The Coleoids (Squid and Octopus)
16:41- Cephalopods - Argonaut Octopus (Paper Nautilus)
17:33 - Cephalopods - The Vampire Squid
18:41 - Conclusion
CHECK OUT MY DEEP SEA WEBSITE: naturalworldfacts.com/deep-se...
I do not own any of the footage. I write the script, narrate, and edit what footage I can find. Footage used belongs to the incredible marine conservation societies of Schmidt Ocean Institute, NOAA, MBARI, WHOI and the Ocean Exploration Institute, along with various other CZcams sources.
Music Used:
Light by Jorge Mendez
Dreams Become Real by Kevin MacLeod
Lost Frontier by Kevin MacLeod
Voices by Patrick Patrikios
Nocturne by Asher Fulero
Solitude by Jorge Mendez
#deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology
Bibliography:
www.shapeoflife.org/resource/...
www.shapeoflife.org/video/mol...
www.earthtouchnews.com/oceans...
www.sciencedirect.com/science...
I see nautilus on the thumbnail, I click
relatable
Fr tho
literally the best channel ive discovered in a long time, as someone who has been fascinated by marine biology since literally forever i get almost giddy when i see one of your uploads, the quality, the atmopshere it creates, the consistency, evrything is perfect! My only complaint before was that i wanted longer videos due to how good they are, and look at this! 20 min videos! 2022 is already better than 2021.
Agreed ! I love when they post full videos
Completely agree, great CZcams channel.
well said!
I couldn't agree more! The quality of content on this channel is unbelievable. The information being provided is one thing, but the editing and, gosh, everything is so good.
I love marine biology too!!
I’m currently in hospital recovering from an extremely painful operation. Listening to your voice describe molluscs had given me so much distraction it’s unreal. I frequently listen to your videos whilst drawing cephalopods and other deep sea creatures; but this has been the most helpful video by far. Thank you so much
Oh my goodness I hope your recovery is fast and you feel better soon, that sounds intense!! Honestly, it means the world to me to read this - knowing that by nerding out about molluscs on CZcams I’ve somehow helped you is just fantastic! I’d love to see your deep sea drawings, do you post them anywhere?
@@NaturalWorldFacts and thank you for the kind wishes ❤
@@NaturalWorldFacts I can second that your voice is amazing to listen to in these videos.
@@NaturalWorldFacts I agree that your voice is like that of professional relaxation therapists, except you are providing educational material with amazing video footage! I found your channel a few days ago and your videos are a real pleasure to watch. This one is my favourite so far as I love nudibranchs and octopus in particular but I'm also learning about species I was not aware of before. i'm forwarding this video to my family and I can guarantee they will love it as well!
Thank you very much for all you do!
I hope you are out of hospital by now, and that your pain has vanished, or at least subsided a lot. I noticed your username is twisted squid, so I hope your doctors treated you appropriately. Speaking of which:
In case you're still recovering, and need some lighthearted diversion, I was just watching a Star Trek TNG episode ("Suspicions" in Season 6) in which a very unusual alien had a medical emergency and I was wondering if they provided their anatomical details and next of kin information when they beam up to the Enterprise?
There is also a fish alien episode involving Mrs. Troi which is pretty funny ("Manhunt" in Season 2).
The CZcams channel "pitch meetings" is hilarious, and there are probably close to 400 videos by now. It's a single comedian named Ryan George, who plays a screenwriter guy and a producer guy. You don't have to know anything about the movies or TV shows because I've only seen about 10% of those, and I find all of the pitch meeting videos very funny! He has a second channel called "Ryan George" in which he does different kinds of skits, which I also highly recommend!
Get well soon! 😄🙏🐙🐠
A golden find within the vast world of useless content on youtube.
Very rare to find something that is as informative, visually stimulating, atmospheric, and deeply relaxing as this.
10 out of 10.
Every.
Single.
Time.
The ocean has either the coolest (cool but weird), or scariest animals you'll ever see. There is nothing between.
nothing in between, but plenty of overlap
Like normal humans?
if something is so amazing that it scares you, that feeling is awe. The ocean itself is awesome.
The Nonsensical semantics of a Nautical Romanticist
there is cute too: i present the dumbo octopus
I'm always happy to see the notification there's a new upload. This channel has become one of my favorites.
Thanks again Emily! Your comments always make my day :)
Mine too, especially nowadays.
I love how this channel is such a treasure trove for marine and deep sea content.
nautilus is my favorite Cephalopod. his like an ammonite but not extinct.
As someone who wishes to enter the deep sea biology field but doesn't have any Universities for it around them, you are the main source of all my education for it! I'm glad I could finally catch a newly posted video!
There's actually something I've been pondering for a while now - would deep sea octopuses have developed the same level of intelligence and behavioural complexity as their shallow water relatives? I imagine that it could be limited by resource availability... Google scholar hasn't supplied me with any research about it, so what do you think?
The main limiting factor for cephalopod intelligence is the lack of active parenting. Cephalopods starve themselves to death while tending to their eggs, becoming a free first meal for their young. Without active parenting, there can be no transfer of knowledge, and with no transfer of knowledge there is no need for intelligence that can handle abstract concepts. However, a colony of octopi in the Mediterranean have been observed living communally, with young octopi learning from elders who haven't reproduced and died yet, so it appears the process of evolving higher intelligence is currently underway. It's suspected the strong selective pressure favoring this communal learning lifestyle is being driven by fishermen.
@@deusexaethera thats some fascinating stuff right there! :)
@@deusexaethera Well despite the lack of active parenting, octopi still seem to be highly intelligent on their own.
The possibility of colonial octopi really opens up alot of possibilities. Their lifespans are very short because of their parental sacrifice. If there are octopi that willingly forgo reproduction (For whatever reason, the death is directly related to reproduction, regardless if they become a meal or not. They are just programmed to die, probably a holdover from previous ancestors) they could then start lengthening their lifespan.
If octopus where actively taught by parents, and lived three times as long? Things would start getting real weird in the ocean.
@@pauldeddens5349 well because they are still very intelligent, but thats where the large difference between intelligence and knowledge comes in. Same as how a human from 20,000 years ago would be a normal functioning member of modern society if they were raised from a baby in modern times, we have had the same general intelligence among us as long as we've been homo sapiens. the only difference is nowadays we have millenia of surviving knowledge that we pass down.
But as you said, if some octopi just decided to never have kids and instead stay around to teach their tricks to the next generation of another octopuses kids? they would probably start to dominate the whole of the worlds ocean floors if it becomes commonplace.
it truly is sad these animals have evolved to basically shut down after the first time breeding. It does offer the benefits of more surviving young because of the free meal they offer themselves as but a change to having less young and just caring for them for the first couple months would probably be a overall benefit imo
Woah! This is perfect! It's always so hard for me to classify what's mollusc and what isn't. I've always assumed lobsters and shrimp/krill/prawns were mulluscs. Good to be proven wrong.
Really glad this helped! Taxonomy can often be quite confusing
Lobsters, Shrimp, Prawns, Crabs, etc. are actually Arthropods, relatives of Spiders, Scorpions, and other insects and the like.
@@SnowblindOtter Good to know! I’ve always known that they were crustaceans, but I always assumed that mollusks came under the crustacean category. Taxonomy still gets me to this day!
@@GeoZoo-official. Taxonomy is confusing as all get-out. I know professional biologists and people with degrees in taxonomy, and they hate it as much as physicists hate organic chemistry.
I know that the defining characteristic of a mollusc is that has a bocal apparatus called radula
Just discovered you through your Deep Sea videos and this is a great video too! (and just noticed it's fresh mmm) I have a deep interest in deep sea creatures since young and even did a website about deep sea creatures with Dreamweaver for my school project almost 18 years ago now. I can't describe how happy I am discovering your channel. Keep it up man!
This is so lovely to read, and I’m thrilled you found my channel and are enjoying my videos! I’d love to check out your old deep sea website if it’s still live :)
Love to see it
Sometimes I watch these videos multiple times just to make sure I absorb all of the information.
Honestly this channel is wonderful. Your content is great, and both so informative and relaxing.
Thank you for these videos. You're helping in so many ways.
Thank you for such a lovely comment. It really does make my day and make it all feel so worthwhile :)
Once again amazing content Leo, it's great to be learning so much as I approach my 60th year 🤗
This was a fantastic video. From the very first minute, I was in awe at how you presented the vast diversity of marine molluscs. Through a combination of exquisite narration, stunning video, and breathtaking music, you have earned a spot as my favorite documentary channel on this platform. Well done.
This is, legitimately, one of the most interesting and entertaining things I've seen on CZcams. Thanks again!
beautifully presented! the narration draws us into the mysterious and fascinating diversity of forms, just mesmerizing footage!
I have long been drawn to the development of the cephalopods, but the other families are just as intriguing with their adaptation strategies and solutions to the challenges of survival (the uses of neurotoxin for example; aposematism; that brooding chamber fashioned by the female Argonaut Octopus~Wow!!)
Thank you for the terrific content.
"Grabs popcorn..."
Another fantastic addition to your growing library of videos. As always, stunningly beautiful, well researched, and wonderful to watch. I'm amazed by how diverse and adaptable molluscs are! So many intriguing and beautiful forms in so many totally different environments! I always learn so much from your videos, Leo...thank you!
Top quality content, as usual. You should be very proud of the work you're doing.
your channel is a work of art! i adore everything about your videos, please never stop
Thank you so so much!! I’m having far too much fun to stop. I’m currently working on 3 films across 3 separate series, one of which will be the longest deep-sea episode I’ve ever made (I got so carried away writing the script) so it’s taking a little longer than usual, but I’m so excited to share it hopefully soon!!
@@NaturalWorldFacts i can't wait to see it!!
I just watched this again because I realized that I never knew how much I didn't know (and how much more I *wanted* to know) about the molluscs. The your presentations are thoughtfully constructed and the systematic review of data makes everything perfectly understandable in a way that my teachers rarely could; making these videos not only informative, but adding a level of interest that makes learning exciting and captivating. Thank you for taking us along on your explorations of the natural world.
What a lovely and thoughtful comment!! Thanks for making my day.
i can't quite describe how well put together your videos are. i can't help but be consumed by a sense of awe and wonder while watching. thank you for sharing this passion of life on this earth!
Your voice is clean, clear and soothing! Wonderful narration, excellent content, thank you!
Do you think in the future you could go over more about freshwater life? I feel like the large varieties of animals in the vast river and lakes don’t get the appreciation they deserve yet are so fascinating in my opinion.
The best deep sea video creator currently imo
Aw thanks, that means a lot :)
My favorite learning channel. Beautiful footage, never ever repetitive or tedious. Perfect. I wish I could subscribe and like your wonderful content more than once.
Thank you for this. My fascination since a very young child is ocean and marine species. You’re a wonderful teacher and have the most soothing and beautiful voice as well. Thank you again, Good Sir. ⭐️
I've only just discovered this channel through a recommended video and I'm so pleased I happened upon it. Simply perfect! Love your content and narration!
Amazing video 😄
Thank you ☺️
Another great job, Leo. At first I was surprised you didn't talk about the cuttlefish, but then I realized it's been done to death, and that you were focusing on certain basic features and adaptations.
It’s kind of beautiful that this comment section is filled with so many different languages. People all around the world are able to enjoy the same music, type wholesome comments, and have their days improved while lifting up others too
Thank you for another amazing video, Leo! This kind of videos is exactly what's needed during these stressful times. Great quality, beautiful images, and a soothing voice - so calming, engaging, and passionate. You could easily make a career as a voiceover actor for documentaries or advertising ;)
One of the most enjoyable youtube channels I've subscribed to by far. The narrator's voice is so soothing and makes me feel relaxed while learning great info on sea creatures.
im having a wonderful evening (its 3am. would you look at that) scrolling trough your videos and filling up my notebook :D
just wanted to say i really appreciate the fact theres subtitles on every video ive seen so far. it truly means a lot.
on a different note, your voice and pronunciation are insanely nice to listen to! and the footage is always incredible, as someone who very rarely actually *watches* to this type of content (i usually just listen to them and sometimes glance at the screen) i was very surprised when i realized i had no problems paying attention to your videos.
everything about them is really really good and i hope to see you do some even bigger things in the future cause man youve definitely got the talent and skill for it
I am so glad that I am such a nerd! This was absolutely informative!🤣😂 And Leo Richards has one of the most soothing voices that I've ever heard!👍
I loved the little section about vampire squid, I didn't know they were neither squid nor octopus, and filter feeders.
if you're curious, as it's understood right now, they're the closing living sister group to octopi
I’m surprised you didn’t cover the cuttlefish, being one of the most diverse of the cephalopods with morphing ability and colour changing ability and many more things.
yeah he didn't seem to cover any of the major groups of cephalopods, though I guess it's because he made a video on them
I dont really use youtube much anymore for entertainment because everything is so quantity over quality, but im glad i found ur channel, you definitely know what ur doing and put in the effort
Mollusks are so cool imo.
I only wish the giant car sized Ammonites and the ortoceras were still alive
Amazing how such quality content is available to watch for free.
I've seen dozens of your videos in the last few days after I encountered your channel. Your voice is perfect for documentaries, it keeps you interested and make it not realize you just saw hours of your content. Keep it going!
@03:37 Cutest slime I have ever seen, look at those innocent little wings lol
Nice and amazing video Greet from "Philippines"🇵🇭
I never knew squids and octopi were mollusks! (as don’t have an external shell) I learn so much from your videos. It’s fascinating to learn how survive in all different environments. Thank you for another well produced and edited video.
The more you know. By that way if thinkin slugs aren't mollusks either
I wasn't sure until I saw the squarespace ad if this was a documentary done by a big company then put on youtube or if it was made specifically for youtube, but hot damn this is one great documentary and probably the one most lovingly-devoted to the subject matter. I could hear the narrator's awe about molluscs and it was really beautiful. Discovery Channel WISHES it has documentaries this good
dear Stanley, me and my boyfriend are addicted to this amazing video and song. We put the video on a big screen, turn off the lights and we dance it quite often. amazing. Thanks for it!
Love the videos. Footage is great. Editing is great. Script writing is great. And I can't get enough of the reverb on the narrator's mic. It makes the whole thing feel like it's done underwater. A+ for immersion.
Thanks so much!! 😊
I wish there were channels for all fields of science as cool as this one. Learning takes a new turn when it's made fun and beautiful.
I have watched so many different educational videos that if I were in the presence of a z list 'celebrity' I won't even talk to them
This video was amazing, I loved the editing :) can’t wait to see more
The narrators voice is so comforting. It’s soft and trustworthy. Is it weird to want to hug someone’s voice? Haha
I love these videos so much.
Was so happy to see an upload!
I just came across this channel and the narrating got me immediately! Slow and precise speaking!
What a relief from the usual speed-talking on most other channels.
THANK YOU!
I found your channel while I was getting ready to sleep last night and I've already watched 3 videos today. Your videos + editing and music are both calming and genuinely interesting? Which is weird because high school biology basically made me hate bio. I'm getting back into it now though, so nature is healing I guess.
(also happy 700th comment!!)
Thank you so much!! This is so lovely to read, I’m really glad you enjoy my films. I’m working on a new one as we speak, and the script is already twice as long as normal and that’s just for part 1 of 3. 🙈 It’s gonna be a biggie!
Leo you've done it again. My lord. Your so talented and your Passion seems to genuinely come across in everything you do ! Thx for sharing / teaching your passion to all of us. Love LOVE YOU & YOUR CHANNEL. YT NEEDS about 100k more creators like you.
This was an excellent and aesthetically pleasing work of science communication! I came away with a much better understanding of mollusc morphology and evolution, and I thoroughly enjoyed watching. Thank you.
I’ve just come across this video while watching CZcams videos to improve my English listening skills on a Saturday afternoon. This is truly amazing. It’s informative, aesthetically superb, and therapeutic at the same time. Thank you, from Tokyo, Japan.
I discovered this channel a fee days ago, but I already love it so much and just can't stop watching. Thank you so much for great content!
Your videos are unmatched, I pray for your greater success im sure you’ve worked for :) your voice and the quality of these entire videos are phenomenal!
Your videos are incredibly well written!
Aye i love seeing your content get better and better! Your videos have gone from good to amazing
this guy is getting so good at voicing for these docs its ridiculous.
Tranquillity at its highest 🆙
Once again you have presented an admirable amount of information on a staggering array of species; using the wide range of films from MBARI, NatGeo, Blue World and many others to stun us into silence with slack jaws and soup-plate eyes. Even the background music is eerie and enigmatic; to give just the perfect amount of suspense. Where you get all of it is beyond me, but your repertoire is so vast and extensive, I'd kill to have just a portion of it at my fingertips.
Thank you again Leo, for taking us on these magical flights of fancy into the mysterious world beneath the waves.
Your voice is so amazingly relaxing. It’s like being taken on a tour of beauty and illumination
Thank you for the work! So lucky to have channels like yours
Just wanted to give appreciation to the quality and depth of this video, but also the fact that all this information is free. Love the channel, keep up the excellent work
this channel is amazing, i'm so glad i happened upon it. excellent find! you do great work here, the minidocs are super informative but very calming and great for nighttime. also molluscs are my favorite phylum, very near and dear so i was so happy to find a video on them here!
This is one of very few channels where I'll "like" videos at the start because I know I'll enjoy them.
I've watched all of your videos at least once, enjoyed them all and learned things each time.
This is one of the best videos I've ever seen on the subject, from research to presentation. Molluscs have long been a fascination of mine and this just blew my mind with how much I didn't know!
Also, I love the narrator's voice, it's so calming
Thanks for another wonderful video. Amazing images, calm, soothing voice, and appropriate music. Cephalopods are my favourite sea creature and I hope you can in future devote a whole episode to them.
when i see new marine videos from you i get so excited! you are my FAVORITE channel to listen to on bad days, your voice is so soothing. thank you for these amazing videos!
Fascinating! I have always been intrigued by mollusks, especially the gastropods. Terrific video!
One of the best narrator and best content on youtube. Very thankful to have found it. Excellent work guys.
Such a high-quality, well-informed, and intriguing documentary! A true work of art.
That was an awesome video. Thanks for the hard work it took to put together such a thoughtful, and well articulated documentary of mollusks.
I love your videos because I can put them in the background while I do other things, and still can understand everything you explain.
I love your channel. Being fascinated by the sea and the creatures that live there, I am glad that high-quality videos such as yours exist.
you and Robert Sepehr are legitimately the only channels I have notifications on. I always look forward too your videos :)
It is so refreshing to hear a narrator not trying to hype up unusual animals as monsters, complete with scary music. N. Richards has a calm, soothing voice that treats new information as it should be - not something to be afraid of! Thank you!!
My only negative comment is calling octopus' appendages "tentacles". They are "arms". Squid have 2 tentacles and 8 arms. Octopuses have no tentacles, just 8 arms.
One of my fav channels! I love deep sea and your narration and information is so wonderful!
I just found this channel, and I've got to say, it's become one of my favorites
So excited to stumble across this channel. It’s going to be my new addiction on CZcams. Done very well and informative! Marine biology, so fascinating! Thanks!!
By far my favorite narrator. Amazing channel and thanks for the time you put into these videos!
This channel is pure bliss!! Thx for the content!!!
I have just discovered an *excellent source of Marine Zoology / Biology.* Thanks, Leo, for a wonderful adventure beneath the Ocean.
you are the BEST!!!!!!! Top tier videos!!! Every single time 🙌🏾🙌🏾🙌🏾🙌🏾🙌🏾
so excited that you made this video!! i love mollusks, especially cephalopods!!
Amazing channel ,never really been into this kind of thing but the amount of detail and visuals have gripped me throughly :)
Every singe one of your videos is just insanely good, each time I see a new upload I'm exited for the evening, when I can give these videos the big screen and time they deserve. Love this channel
Invertebrate paleontologist here, this is great and I learned new things.
I’ve watched this probably 10x now. Love your videos!
You always do such an amazing job with the research, script writing, editing and narration.While I loved the whole video, what caught my eye was the font you used for the title. It is very cleverly lined and spaced that my minds schema saw the homage to font used on the theatrical movie poster of Ripley Scott's Alien. Well played Sir, well played
Bravo, this was great and kept my attention the whole time, rarely repeated video clips, and provided some new info that 10+years of internetting hasnt provided. Thank you!
I'm glad CZcams recommended this video at my homepage. Such a masterpiece. I like the combination of high quality video, detailed information, all is wrapped elegantly with beautiful classical music.
I've bever heard of the Argonaut Octopus before now. That's wild I've never heard of them as much as I've been into sea things my whole life
Enjoyed your video so I gave it a Thumbs Up
Great content as always, perfect for relaxing before bed. Thank you!
Dude awesome video so complete kept my hooked to the end
Fantastic deep dive into the world of mollusks! Great job!
Great video as always! I love how relaxing your voice is
Thank you I have been hungering for good knowledge of mollusks etc. Very good video!
Such a wonderful channel! Destined for great things.. Little more than a year ago I remember when Leo was thrilled to reach 7K subs.. now he'll soon have *half a million!*
Deservedly so! 👏👏
Thank you so much!! How long have you been with me and the channel now? :)