The Alien World of Deep Sea Molluscs

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Published 2022-01-11
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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-sea-hub/

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 YouTube 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/about-molluscs
www.shapeoflife.org/video/mollusc-animation-nautil…
www.earthtouchnews.com/oceans/deep-ocean/video-mas…
www.sciencedirect.com/science/article/pii/S0967063…

All Comments (21)
  • @isit0r887
    I see nautilus on the thumbnail, I click
  • @hadogenes5049
    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.
  • 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
  • @SpaceMonkeyBoi
    The ocean has either the coolest (cool but weird), or scariest animals you'll ever see. There is nothing between.
  • @Emily-ck9ji
    I'm always happy to see the notification there's a new upload. This channel has become one of my favorites.
  • 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.
  • @Megnappinidae
    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?
  • @genghiskhan6809
    I love how this channel is such a treasure trove for marine and deep sea content.
  • @AmasterfulJuice
    nautilus is my favorite Cephalopod. his like an ammonite but not extinct.
  • @IsaacYongMusic
    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!
  • Once again amazing content Leo, it's great to be learning so much as I approach my 60th year 🤗
  • 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.
  • @TheEggoEffect
    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.
  • @timseibel6507
    This is, legitimately, one of the most interesting and entertaining things I've seen on YouTube. Thanks again!
  • @Danika_Nadzan
    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!
  • @AlbertaGeek
    Top quality content, as usual. You should be very proud of the work you're doing.
  • @samhaines8228
    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.
  • @jtanse
    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!
  • @grey7040
    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.
  • @koriw1701
    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.