Deep sea cold-water coral gardens create vital ecosystems for deep sea marine life, providing a place to feed, hide and reproduce for small fish and invertebrates.

Deep in the twilight zone of the ocean, there lives a peculiar fish with a transparent head. This is the Barreleye.

The World of Marine Reptiles. This video is sponsored by Endel. The first 100 people to download Endel at https://app.adjust.com/b8wxub6?campaign=naturalworldfacts_november&adgroup=youtube will get a free week of audio experiences! Reptiles are a diverse and successful group. With over 8,000 species found worldwide, only around 100 species can be considered marine reptiles, including sea turtles, marine iguanas, sea snakes and crocodiles. They retain the defining characteristics of reptiles, including tough scaly skin that covers their bodies. But in addition, marine reptiles have developed a number of specialised anatomical and physiological adaptations to survive in the oceans. We'll take a closer look at these in this film. 00:00 - Introduction 02:01 - Galapagos Marine Iguanas - Anatomical Adaptations 02:42 - Galapagos Marine Iguanas - Temperature Regulation 03:34 - How Marine Reptiles Balance Water and Salt 04:36 - Sea Snakes and Kraits - An Overview 05:47 - Sea Snakes and Kraits - Feeding Behaviours 06:20 - Sea Snakes and Kraits - Batesian Mimicry 06:52 - Sea Snakes and Kraits - Diving Adaptations 07:08 - Sea Turtles - Diving Adaptations 07:36 - Sea Turtles - Seasonal Migrations and Breeding 09:11 - Saltwater Crocodiles - Nesting Behaviours 10:03 - Conclusion CHECK OUT OUR DEEP SEA WEBSITE: https://naturalworldfacts.com/deep-sea-hub/ I do not own any of the footage. I write the script, narrate, and edit whatever 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. Music Used: Earnest by Kevin MacLeod Big Day Tomorrow by Savfk Magnetic Lullaby by Amulets Subterranean Howl by ELPHNT Earnest by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/ Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100248 Artist: http://incompetech.com/Fallen by Jorge Mendez #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Bibliography: https://evolution-outreach.biomedcentral.com/articles/10.1007/s12052-009-0139-y http://ocean.si.edu/ocean-life/reptiles https://mrvanarsdale.com/marine-science/online-textbook/chapter-7-marine-reptiles/

The Marine Carbon Cycle. NordVPN Cyber Month Deal! Go to https://nordvpn.com/naturalworldfacts to get a 2-year plan plus 1 additional month with a huge discount. The marine carbon cycle consists of the biological pump, the carbonate pump and the physical pump. The biological processes of respiration, predation, death and decomposition, along with physical processes such as the thermohaline circulation, work together to remove carbon from the atmosphere and sequester it in the oceans. In this video we'll explore what makes the oceans a net carbon sink, and why the marine world is so important to the global carbon cycle. 00:00 - An Introduction to the Marine Carbon Cycle 01:52 - The Biological Pump - Diffusion of Carbon 02:36 - The Biological Pump - The Role of Phytoplankton 03:42 - The Biological Pump - Predation and the Food Web 04:52 - The Biological Pump - Diel Vertical Migration 06:30 - The Biological Pump - Marine Snow and the Deep Sea 08:14 - The Biological Pump - Whale-falls and Carrion 09:38 - The Carbonate Pump - The Formation of Limestone 10:25 - The Carbonate Pump - The White Cliffs of Dover 11:02 - The Carbonate Pump - The Role of Coral Skeletons 12:05 - The Carbonate Pump - The Shell-building Animals 13:13 - The Physical Pump - Upwelling and Downwelling 14:08 - The Physical Pump - Thermohaline Circulation 15:08 - Conclusion: The Importance of the Marine Carbon Cycle CHECK OUT OUR DEEP SEA WEBSITE: https://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, which is allowed due to YouTube's 'Fair Use' policy as these films are created for educational purposes. Footage used belongs to the incredible marine conservation societies of MBARI, WHOI, Schmidt Ocean and the Ocean Exploration Institute, along with various other YouTube sources. Music Used: Separated by the Storm by Gareth Coker Now Use the Light, We Want to See! by Gareth Coker Kwolok's Throne Room by Gareth Coker The Darkness Lifted by Gareth Coker Silent Woodlands by Gareth Coker #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Bibliography: https://www.iaea.org/topics/oceans-and-climate-change/the-ocean-carbon-cycle https://www.open.edu/openlearn/nature-environment/introduction-energy-resources/content-section-4.4 https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.974.4692&rep=rep1&type=pdf

Jawless and Cartilaginous Fish. Become smarter in 5 minutes by signing up for free today: https://cen.yt/mbnaturalworldfacts - Thanks to Morning Brew for sponsoring today’s video. Cartilaginous fish and jawless fish are quite different to bony fish. These two groups, also known as Chondrichthyes and Agnatha respectively, build their skeletons using cartilage. A tough but flexible tissue, lighter than bone, that allows them to maintain neutral buoyancy without any need for a swim bladder. In this video we'll take a look at the differences between jawless fish and cartilaginous fish, and discuss their adaptations and behaviours within the deep sea ecosystem. Watch Part 1 - Bony Fish: https://youtu.be/PksKZoZIkI4 00:00 - Introduction to Cartilaginous Fish 01:52 - Agnatha - Jawless Fish Structure 02:34 - Agnatha - The Hagfish 03:45 - Agnatha - The Lamprey 04:45 - Evolutionary History of Jawless Fish 05:50 - Elasmobranchs - Structure of Sharks 06:29 - Elasmobranchs - Shark Feeding Behaviours 06:59 - Elasmobranchs - The Cookie cutter Shark 07:15 - Elasmobranchs - The Goblin Shark 07:45 - Elasmobranchs - The Megamouth Shark 08:25 - Elasmobranchs - Scavenger Sharks 09:02 - Elasmobranchs - The Greenland Shark 09:55 - Elasmobranchs - Structure of Rays and Skates 10:27 - Elasmobranchs - The Lifestyle of Rays and Skates 10:57 - Evolutionary History of Cartilaginous Fish 11:29 - Holocephali - Structure of Chimaeras 12:35 - Holocephali - Pelagobenthic Lifestyle of Chimaeras 13:10 - Holocephali - Chimaera Feeding Behaviours 13:55 - Conclusion CHECK OUT OUR DEEP SEA WEBSITE: https://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 MBARI, WHOI and the Ocean Exploration Institute, along with various other YouTube sources. Music Used: Alone We Have No Future by Ludvig Forssell The Face of Our New Hope by Ludvig Forssell An Endless Beach by Ludvig Forssell Fragile by Ludvig Forssell A Final Waltz by Ludvig Forssell #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Bibliography: https://sites.google.com/site/swimmingwithdiefishes/riley-s-reef/agnathachondrichthyesosteichthyes https://www.sharksider.com/understanding-cartilaginous-fish-difference-sharks-rays/ https://saveourseas.com/update/chimaeras-the-sharks-forgotten-cousins/

Bony Fish of the Deep Sea. Go to https://nordvpn.com/naturalworldfacts to get a 2-year plan plus 4 additional months with a huge discount. The deep sea is home to an array of marine creatures, and fish are by far the most well known. But their diversity means they do not comprise a single group, and they are not all closely related. In this two-part film, we take a look at the different groups of fish and how their adaptations differ. Part 1 examines the two groups of bony fish (Osteichthyes): the ray-finned fish, and the lobe-finned fish which includes the elusive deep sea coelacanth. Watch Part 2 - https://youtu.be/dl6LhvGdozo 00:00 - An Introduction to Deep Sea Fish 01:48 - Ray-Finned Fish - Overview 03:10 - Ray-Finned Fish - Structure 04:28 - Ray-Finned Fish - Adaptations 05:03 - Ray-Finned Fish - The Lionfish 05:38 - Ray-Finned Fish - The Flying Fish 06:11 - Ray-Finned Fish - Deep Sea Anglerfish 06:49 - Ray-Finned Fish - The Frogfish 07:10 - Ray-Finned Fish - The Tripodfish 07:47 - Ray-Finned Fish - The Giant Oarfish 08:27 - Lobe-Finned Fish - Overview 09:22 - Lobe-Finned Fish - Coelacanth Structure 09:43 - Lobe-Finned Fish - Coelacanth Feeding Behaviour 10:45 - The Diversity of Fish 11:17 - Conclusion CHECK OUT OUR DEEP SEA WEBSITE: https://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 MBARI, WHOI, Schmidt Ocean Institute and the Ocean Exploration Institute, along with various other YouTube sources. Music Used: A Keepsake from the Past by Gareth Coker The Sacrifice by Gareth Coker Witch of the Woods by Bear McCreary Climbing the Ginso Tree by Gareth Coker The Spirit Willow by Gareth Coker #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Bibliography: https://nhpbs.org/wild/Osteichthyes.asp https://www.blueplanetaquarium.com/blog/fish-stories/cartilaginous-fish-vs-bony-fish-differences-between-them/ https://www.ucl.ac.uk/museums-static/obl4he/vertebratediversity/rayfinned_fishes.html

The deep sea relies on keystone species to maintain balance. Through predation, competition and symbiosis, changes in the population of one species affects the population of another. But at the heart of these diverse and vibrant deep sea communities are the keystone species, whose presence keeps the balance in the ecosystem by determining the numbers of other species. Without keystone species, ecosystems would look very different, and if they disappeared, the oceans would be more vulnerable to environmental change and would experience a rapid decline in biodiversity. The three different kinds of keystone species, the predators, ecosystem engineers, and mutualists, have very different roles to play in order to maintain their ecosystems. Let’s take a closer look at these, and examine the keystones of the deep sea. 00:00 - An Introduction to Deep Sea Keystone Species 01:47 - Chapter 1: Keystone Predators - The Trophic Cascade 03:31 - Chapter 1: Keystone Predators - The Role of Predators 04:54 - Chapter 2: Ecosystem Engineers - Autogenic vs Allogenic 06:16 - Chapter 2: Ecosystem Engineers - Corals as Keystones 07:19 - Chapter 2: Ecosystem Engineers - Benthic Burrowers 08:59 - Chapter 2: Ecosystem Engineers - Whale-Pumps and Whale-Falls 12:16 - Chapter 3: Keystone Mutualists - The Importance of Mutualism 13:03 - Chapter 3: Keystone Mutualists - Mutualists at Cold Seeps 15:09 - Conclusion: The Importance of Keystone Species CHECK OUT OUR DEEP SEA WEBSITE: https://naturalworldfacts.com/deep-sea-hub/ I do not own any of the footage. Footage used belongs to the incredible marine conservation societies of Schmidt OI, MBARI, WHOI and the Ocean Exploration Institute, along with various other YouTube sources. Music Used: Cold by Jorge Mendez War Inside by Jorge Mendez Oceans by Jorge Mendez Best Case Scenario by Jorge Mendez Perhaps by Jorge Mendez As you can see, all of the beautiful music in this video was composed by Jorge Mendez! Follow him on YouTube for more gorgeous pieces like these. #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology

Crustaceans of the Deep Sea. Start speaking a new language in 3 weeks with Babbel 🎉 Get up to 65% OFF in your subscription▶️ here: https://go.babbel.com/12m65-youtube-naturalworldfacts-aug-2021/default Crustaceans, of all the animal groups in the ocean, are by far the most successful. Coming in a boundless array of colours, shapes and sizes, crustaceans have diversified so much that they are often called the insects of the oceans, a title reflecting their remarkable diversity and abundance. But nowhere are they more weird and wonderful than in the deep sea, where crustaceans have adapted in countless ways in order to survive, and play key roles in the ecosystem. Let’s take a closer look at these incredible invertebrates. 00:00 - Introduction 00:20 - The Diversity of Crustaceans 00:57 - The Structure of Crustaceans 01:46 - Adaptations of Deep Sea Crustaceans 02:00 - Decapods Explained (Adaptations of Crabs) 02:11 - Adaptations of Antarctic Krill 02:54 - The Importance of Krill in the Ecosystem 03:26 - The Role of Crustaceans in the Food Web 03:58 - Amphipods as Detrivores of the Deep Sea 04:55 - Adaptations of Deep Sea Amphipods 05:30 - Abyssal Gigantism in Amphipods 06:00 - The Supergiant Amphipod 06:22 - Abyssal Gigantism in Giant Isopods 06:51 - Conclusion: The Importance of Deep Sea Crustaceans DEEP SEA HUB: https://naturalworldfacts.com/deep-sea-hub/ Footage used is from YouTube, NOAA, MBARI, the Ocean Exploration Institute and the Schmidt Ocean Institute. Music Used: Greenland Shark by Long Live Antarctica! (Alex), a good friend of mine. Check out the full track: https://www.youtube.com/watch?v=FOqeep0NYKA&t=91s Namaste by Audionautix is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/ Artist: http://audionautix.com/ What True Self, Feels Bogus, Let's Watch Jason X by Chris Zabriskie #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Resources: Dipper, F. (2016). The Marine World: A Natural History of Ocean Life. United Kingdom: Princeton University Press.

Secret Life of Rock Pools. The first 100 people to download ENDEL by clicking https://app.adjust.com/b8wxub6?campaign=naturalworldfacts_september&adgroup=youtube will gain free access for 1 week. As the tide recedes along the shores, it uncovers a truly alien world of rock pools. At first look, the landscape presents little more than a barren, lifeless stretch of thick mud and rotting seaweed, strewn with boulders. But these features come together to create a unique habitat. Twice a day, miles of sand, gullies, reefs and rock pools are exposed, bringing into view a wealth of rarely seen marine life. Here, the sparse isolated pools open a window on the many conflicts that these creatures must content with in order to survive. Each rock pool is a tiny but complex ecosystem, home to crabs, shrimps, and all manner of incredible creatures. All the footage in this video is completely original and was filmed by the NWF team - aka Leo and his girlfriend Ella :D Filmed on location at La Rocque, Jersey, Channel Islands. 00:00 - An Introduction to Rock Pools 01:48 - Searching for Life in the Fog 03:17 - Adaptations in the Rock Pools - Shells and Exoskeletons 04:36 - The Hidden World of Crabs 06:55 - Adaptations in the Rock Pools - Camouflage 07:26 - The Nutrient Cycle - Life, Death and Decay 08:37 - The Nutrient Cycle - Grazers and Detrivores 09:39 - A Sanctuary for New Life 10:31 - The Returning Tide 11:08 - Outro CHECK OUT OUR DEEP SEA WEBSITE: https://naturalworldfacts.com/deep-sea-hub/ Music Used: Stay by Jorge Mendez Timeless by Jorge Mendez War Inside by Jorge Mendez Fall by Jorge Mendez Silver Linings by Jorge Mendez Away by Jorge Mendez As you can see, all of the beautiful music in this video was composed by Jorge Mendez! Follow him on YouTube for more gorgeous pieces like these. #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology