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4,718,624 Views • Nov 15, 2022 • Click to toggle off description
Deep sea (abyssal) gigantism demonstrates the role of natural selection in driving evolution and survival, particularly in an environment characterised by challenging conditions and limited resources. Evolution tends towards the most effective adaptations to grant animals the best chances of survival. And whether large or small, evolution selects for the best-adapted body size to survive these conditions. Though widely debated and often controversial, the research that has been done into the science behind deep sea gigantism has significant implications in the human world; it is believed that climate change may have a greater impact on ocean dwellers than any other population of animals. As the colder oceans warm up, the balance of temperature, oxygen supply, and what organisms are present, will throw the equilibrium off course. And the giants, which rely so heavily on this fine balance, may be the first to go.
Support me on Patreon: www.patreon.com/naturalworldfacts
00:00 - Introduction to Deep Sea Gigantism
02:27 - Kleiber's Rule - The Pressure Misconception
04:06 - Kleiber's Rule - How Buoyancy Enables Gigantism
05:00 - Kleiber's Rule - The Efficiency of Larger Animals
05:52 - Kleiber's Rule - Food Availability in the Deep Sea
07:00 - Gigantism Examples - Gigantism in Amphipods
08:45 - Gigantism Examples - The Colossal Squid
09:18 - Gigantism Examples - The Humboldt Squid
09:38 - Gigantism Examples - The Magnapinna (Bigfin Squid)
10:52 - Gigantism Examples - The Sleeper Sharks
13:41 - Kleiber's Rule - Metabolism of Deep Sea Giants
14:59 - Kleiber's Rule - Gigantism in Sponges
16:02 - Polar Gigantism - Bergmann's Rule
17:43 - Polar Gigantism - Giant Polar Invertebrates
20:00 - Polar Gigantism - The Oxygen-Temperature Hypothesis
21:34 - Polar Gigantism - A Fragile Ecosystem
23:05 - The Island Rule - A Scale Model of Evolution
24:20 - The Island Rule - Adaptive Radiation (Darwin's Finches)
25:19 - Insular Gigantism and Dwarfism
26:29 - Deep Sea Gigantism and Dwarfism
28:16 - The Island Rule - Islands and the Deep Sea
29:40 - Conclusion
CHECK OUT MY DEEP SEA WEBSITE: [naturalworldfacts.com/deep-sea-hub/](naturalworldfacts.com/deep-sea-hub/)
Written, Narrated and Edited by Leo Richards
I do not own any of the footage. I write the script, narrate, and edit what footage I can find, which is allowed due to YouTube's 'Fair Use' policy as these films are transformative and for educational purposes. Footage used belongs to the incredible marine conservation societies of Schmidt Ocean Institute, MBARI, WHOI and the Ocean Exploration Institute, along with various other YouTube sources. Most footage is used with explicit permission of the copyright owner. In cases where I cannot contact the owner or have not received a reply, I use certain clips in accordance with the Fair Use policy.
Music Used:
Ocean by Aleksey Chistilin
Il. Largo by Hawkins
Under Canopies by Spearfisher
Ripples by Tamuz Dekel
Parallel Dimension by Onyx Music
Marakana by Alon Peretz
Come Back Home by Ardie Son
Elapsed by Sémø
Life by O.B
Waiting for a New Day by Aleksey Chistilin
Stream by ANBR
Sun Up by Laurel Violet
Home of the Gumon by Gareth Coker
Slow Tides by Eleven Tales
Beneath the Mountain by Rising Tide
Autumn Nights by O.B
#deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology
Bibliography:
The Island Rule and the evolution of body size in the deep sea - JSTOR (no date). Available at: www.jstor.org/stable/pdf/3838549.pdf
Vermeij, G.J. (2016) Gigantism and its implications for the history of life, PloS one. U.S. National Library of Medicine. Available at: www.ncbi.nlm.nih.gov/pmc/articles/PMC4714876/ (Accessed: November 14, 2022).
Why do some creatures in the deep sea grow to enormous sizes? (2022) Science ABC. Available at: www.scienceabc.com/nature/animals/creatures-deep-s…
Views : 4,718,624
Genre: Education
Date of upload: Nov 15, 2022 ^^
Rating : 4.922 (2,340/118,101 LTDR)
RYD date created : 2024-04-27T23:16:13.690282Z
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YouTube Comments - 2,672 Comments
Top Comments of this video!! :3
"a slow moving scavenger, observed clumsily stumbling onto bait, latching on, and gorging itself for hours"
I am a deep sea creature
3.5K |
I wish they would just give you a BBC earth camera crew and send you off around the world to do as you will 🙏🏻
1.7K |
Sorry for the blurry shot towards the end of the film - I had some concerns about the legitimacy of some footage from a stock footage site in terms of its copyright allowances, so I have blurred the shot until I can officially look into it and obtain a license if necessary.
134 |
I've seen many nature documentaries through the course of my life and some of them are truly stunning. But never have I seen any documentary where such attention went into every detail - the titles, font choices, subtle design elements, infographics, edits, music, writing, narration... Everything is in balance. This is the boutique magazine of nature documentaries. Your passion is obvious and inspiring.
1.5K |
I have a three and a half year old daughter that is obsessed with the videos on your channel. She loves the music, your tone of voice, and all the video footage of nature. We often pause the videos to explain the things that you are saying, and she loves it all the more.
When she wants to watch one of your videos, she asks for " The nice nature science man".
Thank you for your amazing videos.
7.6K |
Sorry for the typo in the Greenland Shark length in the on-screen text! It should read 7m not 7cm - it was a formatting error from copying across my custom infographic text template. 😭
161 |
It's always a wonder to me how the photographers manage to get such amazing footage in such extreme environments.
916 |
Hello! To anyone else also bewildered by the Greenland (sleeper) sharks' eyes, wondering if they're Just ~Like That~ bc of Deep Ocean Evolutionary Shenanigans, turns out that a lot of sleeper sharks have specific parasites (called Ommatokoita elongata) that latch onto their corneas and render them semi-blind. I suppose since the sharks don't prioritize vision for hunting, that the parasites struck gold.
732 |
Glad I stumbled across this. A lot of YouTube “documentaries” are filled with misinformation and/or low production quality. This was beautiful in every way, and I look forward to watching many more.
2.1K |
One of my favorite topics about the ocean. Thank you Leo for making these amazing documentaries!
2.3K |
I'm a psych provider who spends 8 hours a day listening to my patients talk about distressing topics. Although I love my job, I come home drained and sometimes feeling very emotional. Before I go to bed, I watch one of your videos and I feel my stress melting. Your soothing videos and calming graphics have helped me mentally enormously. I'm sure there are plenty others like me who just have not left you a comment yet. I hope you know how much your videos help and soothe us ❤️
45 |
I did a study on the humboldt squid once, their syntax is incredibly complex and beautiful! Their ability to communicate during feeding frenzies and stay coordinated is immaculate!!
586 |
This documentary is absolutely stunning. I literally caught my mouth hanging open a few times. I loved your calm cool voice narrating the facts. The music choice was perfect. Emotional tones that sounded both fantasy and sci-fi. It almost romanticized these creatures. The writing too was gorgeous. I subscribed in the first ten minutes. Thank you so much for your work
441 |
Yes!!! Your videos re-ignited my childhood love for marine biology. When you touched on deep sea gigantism before, it opened my mind to how incredibly nature can “copy” itself to sustain life.
It reminded me of how sunflowers are basically giant daisies… certain plants have leaf formations that are like the giant or mini versions of other plants, similar to how a mini version of a giant squid could be drifting far above his brethren, unknowingly.
Nature has this way of exponentially growing or shrinking its genetic material like that (not sure what the actual term would be lol just started the video heheh 🤣🤥) in a fractal-like manner that just blows me away. All to sustain life and keep it thriving in its environment.
TL;Dr These videos blow me away, thank you. ☺️
969 |
I refuse to believe that you aren’t on the same level as Blue Planet. These documentaries are incredibly beautiful and soothing. It calms my anxiety to listen to and I learn so much more. The way you explain everything is so clear, leaving no real questions unanswered. I agree with the other comment. You deserve to be airing on TV. This is incredible 💙
59 |
You are very talented at making this type of documentary. I have PhD in biological subject, maybe that makes me picky when seeing documentaries and presentation of various evidence, yet this was surprisingly very very impressive. I also noted the great choice of font and details. Highest quality I've seen.
243 |
Your old video on deep sea gigantism was already fantastic, but this is quite possibly some of the best content I've ever seen! I love the addition of adding in parts of "Hidden World of Islands" and "Giants of the Polar Deep" (the latter being probably my favorite video of yours so far). The sheer size difference between the average sea spiders and their polar region counterparts is still pretty insane to me. Thank you for making these videos! You've definitely been a massive inspiration for me to continue wanting and trying to pursue a career in marine biology.
486 |
Fun fact, the magnapinna has just recently been found to use its tentacles aggresively, so it may be more predatory than previously believed.
91 |
When that one marine expert childlishly said "So cool" aftrer seing a long squid, it was so wholesome. Seeing someone geeking about their passion always makes me happy
39 |
@NaturalWorldFacts
1 year ago
This one has been a long time in the making, I really hope you enjoy! I covered Deep Sea Gigantism in my first ever deep-sea film 2 years ago, and felt it needed a remake to do the topic justice. So sit back, relax, and prepare to immerse yourself in the wonders of the depths for half an hour. 😊 My Patreon for anyone wishing to support my channel 🦈: www.patreon.com/naturalworldfacts
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