The first 100 people to go to https://www.blinkist.com/naturalworldfacts will get unlimited access for 1 week to try it out. You'll also get 25% off if you want the full membership. Oceanic Islands make up a sixth of all land on Earth. In the Pacific alone, more than 25,000 islands are scattered amidst the endless blue. From Hawaii's rocky mountains, to coral atolls of the Maldives, each hosting unique communities of life and species found nowhere else on Earth. Ecosystems that would not exist if not for the powerful forces that pulled these mighty rocks from the abyss. Volcanism, and tectonics. Watch Part 1 - Seamounts: https://youtu.be/q-U4G9zBk3E 00:00 - An Introduction to Oceanic Islands 01:39 - Chapter 1: Life and Death of an Island - The Abundance of Islands 02:34 - Chapter 1: Life and Death of an Island - How Islands Form 03:26 - Chapter 1: Life and Death of an Island - How Coral Atolls Form 05:04 - Chapter 2: A Land of Opportunity - The Arrival of Life at Islands 07:48 - Chapter 2: A Land of Opportunity - Adaptive Radiation 08:52 - Chapter 2: A Land of Opportunity - The Story of Darwin's Finches 09:33 - Chapter 2: A Land of Opportunity - A Scale Model of Evolution 11:37 - Chapter 2: A Land of Opportunity - The Lemurs of Madagascar 12:57 - Chapter 3: Life Beneath the Waves - The Island Mass Effect 14:02 - Chapter 3: Life Beneath the Waves - The Galapagos Humboldt Current 15:02 - Chapter 3: Life Beneath the Waves - The Importance of Mangroves 16:14 - Conclusion: The Importance of Islands 17:19 - Message from our Sponsor 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. Footage used is from various YouTube sources. Due to the sheer number of sources used, I'm unable to list them all here. If I've used your footage and you would like to be credited, let me know and I'll add a link to your video and channel here. Music Used: No Field Was Formed by Austin Wintory Secret Garden by Nocturne Ichthyosaurus Communis by Austin Wintory Elasmosaurus Platyurus by Austin Wintory Balaenoptera Musculus by Austin Wintory Final Confluence by Austin Wintory Home of the Gumon by Gareth Coker First Steps Into Sunken Glades #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Resources: https://www.bbc.co.uk/teach/ks3-gcse-biology-islands-unusual-animals/zj38vk7 https://www.majordifferences.com/2018/08/10-differences-between-pioneer-community-and-climax-community.html#.YF7-gl37SdY https://www.amnh.org/explore/videos/biodiversity/mangroves-the-roots-of-the-sea/why-mangroves-matter

Seamounts are important deep sea ecosystems. Breaking the flat monotony of the abyssal plains, these underwater mountains emerge from the mud. Those that rise less than 1,000 m (3,000 feet) above the plains are called abyssal hills, while anything taller is a seamount. And there are at least 100,000 of them, with over half found in the Pacific Ocean near the tectonic plate boundaries. An unsurprising statistic, for Seamounts are formed from volcanism. The same process responsible for the formation of many island chains. At mid-ocean ridges, the converging tectonic plates collide at boundaries called subduction zones. One plate is subducted, or forced down towards the Earth’s molten interior. As it is subducted, the crust melts and becomes magma, which rises through the rock and erupts to form volcanoes and seamounts. Watch Part 2 - Islands: https://youtu.be/wYDhBkBg-6Y 00:00 - An Introduction to Seamounts 02:00 - Chapter 1: Mountains in the Deep - How Seamounts Form 03:30 - Chapter 1: Mountains in the Deep - The Pacific Ring of Fire 04:33 - Chapter 2: An Underwater Paradise - The Perfect Ecosystem 06:41 - Chapter 2: An Underwater Paradise - The Life of Seamounts 07:30 - Chapter 2: An Underwater Paradise - The Davidson Seamount 08:23 - Chapter 2: An Underwater Paradise - The Coral Gardens 10:05 - Chapter 2: An Underwater Paradise - The Octopus Garden 11:18 - Chapter 3: The Land of Volcanoes - Hawaii's Island Chains 12:09 - Chapter 3: The Land of Volcanoes - Island Preview 12:51 - Outro 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. Footage used is from various YouTube sources, the BBC, Jonathan Bird's Blue World, MBARI, OceanX, NatGeo, the Ocean Exploration Institute and the Schmidt Ocean Institute, as well as other sources. Music Used: The Call by Austin Wintory Atonement by Austin Wintory Delphinus Delphis by Austin Wintory Apotheosis by Austin Wintory Temptations by Austin Wintory #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Resources: https://www.nationalgeographic.org/encyclopedia/ring-fire/ https://www.britannica.com/place/Ring-of-Fire https://oceanexplorer.noaa.gov/explorations/06davidson/welcome.html

Echinoderms come in countless shapes and sizes, but there are a few unique features that unite the 6,500 living species. Many adults of this phylum have 5-way radial symmetry; a pattern most prominent in the shape of the starfish. In addition, they have skeletons made up of interlocking calcium carbonate plates and spines called ossicles. This provides rigidity for their complex structures, making up the protective shell of urchins, or the column-like spine of crinoids. These skeletons are also the reason why fossils for echinoderms are so widespread and well-preserved, with some crinoid fossils being as old as 500 million years. Perhaps the most peculiar creatures of this phylum are the holothurians. Sea cucumbers, with their retractable feeding tentacles and tube feet around the mouth which they use to forage in the sea floor mud. 00:00 - An Introduction to Echinoderms 01:27 - The Structure of Echinoderms 02:01 - Ossicles Explained 02:35 - Holothurians Explained (Sea Cucumbers) 02:53 - The Swimming Sea Cucumber 04:21 - The Sea Pig of the Abyss 05:11 - The Role of Holothurians - Filter Feeding 05:28 - The Role of Holothurians - Bioturbation 05:49 - The Role of Holothurians - Symbiosis 05:55 - Symbiosis: Emperor Shrimps & Sea Cucumbers 06:10 - Symbiosis: Pearlfish & Sea Cucumbers 06:29 - Defensive Adaptations of Holothurians 07:10 - Starfish Explained 07:37 - The Crown-of-thorns Starfish 08:13 - The Consequences of Ecosystem Instability 08:24 - The Role of Sea Urchins - Maintaining Balance 08:59 - Brittle Stars Explained 09:30 - Basket Stars Explained 10:14 - Conclusion: The Importance of Echinoderms DEEP SEA HUB: https://naturalworldfacts.com/deep-sea-hub/ Footage used is from various YouTube sources, the BBC, Jonathan Bird's Blue World, MBARI, OceanX, NatGeo, the Ocean Exploration Institute and the Schmidt Ocean Institute, as well as other sources. Music Used: Relics by Ben Prunty (from the game Subnautica Below Zero) Seductress by Francis Preve Dark Walk by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/by/4.0/ Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100468 Artist: http://incompetech.com/ Lone Harvest by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/by/4.0/ Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100409 Artist: http://incompetech.com/ Crystal Caves by Ben Prunty #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Resources: https://oceanexplorer.noaa.gov/okeanos/explorations/ex1811/logs/nov7/welcome.html https://oceanconservancy.org/blog/2019/07/03/everything-need-know-sea-pigs/

The depths of the Mariana Trench conceal many peculiar creatures. This deep sea film is sponsored by NordVPN. Go to https://nordvpn.com/naturalworldfacts or use code naturalworldfacts to get a 2-year plan plus a bonus gift with a huge discount. Check out the NordVPN YouTube channel here: https://www.youtube.com/watch?v=yCWNR... The Mariana Trench sits like a crescent-shaped dent in the floor of the Pacific. A 2,550 km long, 69 km wide fracture that plummets down into a pure black void of the Hadal Zone. At the bottom, it hosts the deepest known location on Earth. The Challenger Deep, 11,033 metres or 36,200 feet beneath the waves. The trench itself is but one part of a global network of deep scars that cut across the ocean floor. Features that formed from a process called subduction. In the case of the Mariana Trench, the western edge of the Pacific Plate was thrust beneath the smaller Mariana Plate to the west, creating the deep fracture. Molten material then rose through volcanoes near the trench, building the nearby Mariana Islands. 00:00 - Introduction 01:18 - Chapter 1: Gates of the Underworld - How the Trench Formed 02:41 - Chapter 1: Gates of the Underworld - An 'Impossible' Frontier 03:40 - Chapter 1: Gates of the Underworld - The HMS Challenger 04:11 - Chapter 2: In Pursuit of the Abyss - The Bathyscape Trieste, 1960 05:51 - Chapter 2: In Pursuit of the Abyss - The Deepsea Challenge, 2012 06:38 - Chapter 3: Discoveries in the Dark - The Kaiko Mission 07:56 - Chapter 3: Discoveries in the Dark - The Hadal Amphipod 09:00 - Chapter 3: Discoveries in the Dark - Abyssal Sea Cucumbers 09:45 - Chapter 3: Discoveries in the Dark - The Mariana Snailfish 10:17 - Chapter 3: Discoveries in the Dark - Denizens of the Abyss 11:05 - Conclusion CHECK OUT OUR DEEP SEA WEBSITE: https://naturalworldfacts.com/deep-se... 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. Footage used is from various YouTube sources, MBARI, NatGeo, the Ocean Exploration Institute and the Schmidt Ocean Institute, as well as other sources. Music Used: Blue Danube by Strauss Bach Cello Suite No. 1, G Major, Predule, performed by Cooper Cannell Always (Hebridean Mix) by Jessica Curry This Godforsaken Aerial by Jessica Curry Ode to Joy performed by Cooper Cannell #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Resources: http://awesomeocean.com/top-stories/8... http://www.deepseachallenge.com/the-e...

The HMS Challenger set out on its 3-year voyage in 1872. This expedition was to be the first of its kind. One organised specifically to gather data on the ocean environment and its inhabitants. During its 127,580 km (79,280 mi) journey circumnavigating the globe, the crew on board the Challenger took 492 deep sea soundings, and 284 dredges and trawls. This led to the discovery of 4,700 new species of marine life, recorded in volumes and illustrated by the official expedition artist, John James Wild. 00:00 - Introduction 01:42 - Chapter 1: Setting Sail - Preparing the HMS Challenger 03:09 - Chapter 1: Setting Sail - The Theories 04:12 - Chapter 2: The Discoveries - The Challenger Deep 05:45 - Chapter 2: The Discoveries - Trawling and Dredging 06:31 - Chapter 2: The Discoveries - Disproving the Abyssus (Azoic) Theory 07:09 - Chapter 2: The Discoveries - Finding New Species 08:30 - Chapter 3: Dawn of Oceanography - The Extent of the Voyage 09:07 - Chapter 3: Dawn of Oceanography - The Scientific Revolution 09:45 - Chapter 3: Dawn of Oceanography - The Future of Ocean Science Featuring the incredible voice talent of Samuel Stocks as the voice of Sublieutenant Lord George Campbell! Want to employ his voice in your project? Check him out on Fiverr: - Fiverr: https://www.fiverr.com/samstocksvoices - Twitter: https://twitter.com/thesamstocks - All his links: https://linktr.ee/thesamstocks CHECK OUT OUR DEEP SEA WEBSITE: https://naturalworldfacts.com/deep-sea-hub/ Music Used: Air Prelude by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/by/4.0/ Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100337 Artist: http://incompetech.com/ Mighty and Meek by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/by/4.0/ Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100500 Artist: http://incompetech.com/ Metaphysik by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/by/4.0/ Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1400056 Artist: http://incompetech.com/ Majestic Hills by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/by/4.0/ Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100423 Artist: http://incompetech.com/ Aioli by Andrew Langdon #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Resources: https://www.discovermagazine.com/planet-earth/hms-challenger-humanitys-first-real-glimpse-of-the-deep-oceans https://rammhmschallenger.wordpress.com/category/collections/

The wonderful world of whales and dolphins. Below the waves lies a world of giants. Out in the open ocean, whales and dolphins are well-suited for to a life of wandering, traversing thousands of miles each year in search of krill blooms or breeding grounds. Together, these colossal mammals belong to the infraorder cetaceans. A name with roots in Greek, from ketos, meaning ‘a large sea creature’. But despite their size, cetaceans are elusive creatures, spending most of their lives underwater and in remote areas far out to sea. Let’s shine a light on the wonderful world of these marine mammals. 00:00 - An Introduction to Cetaceans 01:11 - The Diversity of Cetaceans 01:50 - The Structure of Whales and Dolphins 02:47 - The Two Cetacean Superfamilies 03:01 - Mysticeti: How Baleen Whales Hunt 03:34 - The Colossal Blue Whale 03:58 - Rorqual Whales Explained 04:20 - Seasonal Whale Migrations 04:55 - Odontoceti: The Toothed Whales 05:14 - The Acrobatic Spinner Dolphin 05:42 - Hunting: Strand Feeding in Dolphins 06:12 - Hunting: Mud Ring Feeding in Dolphins 06:36 - Hunting: Bubble-net Feeding in Humpbacks 07:53 - Deep Dive: The Cuvier's Beaked Whale 08:24 - Deep Dive: The Sperm Whale 08:42 - The Mammalian Diving Reflex 09:10 - Vocalisations in Cetaceans 09:29 - The Song of the Blue Whale 09:44 - The Song of the Fin Whale 09:56 - The Song of the Humpback 10:23 - The Song of Toothed Whales 10:59 - The Mighty Killer Whale 11:33 - Whale-Fall Communities 12:24 - The 'Whale Pump' 12:57 - Conclusion DEEP SEA HUB: https://naturalworldfacts.com/deep-sea-hub/ Footage used is from YouTube, MBARI, OceanX, NatGeo, the Ocean Exploration Institute and the Schmidt Ocean Institute, as well as other sources. Music Used: Precious Life by Savfk On the Origin of Species by Savfk Big Day Tomorrow by Savfk Through The Crystal by Jeremy Blake Space Walker by Au.Ra Footsteps Underwater by JAde Wii #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Bibliography: Dipper, F. (2016). The Marine World: A Natural History of Ocean Life. United Kingdom: Princeton University Press.

How To Create a Closed Terrarium for Free Terrariums are a fun outdoors project. Join me as I show you how to build a closed native terrarium in a sealed jar using moss, plants, hardscape, and insects found around the countryside, in parks or gardens. A terrariums is an enclosed ecosystem that can be self-sustaining, meaning you can have a slice of the natural world on your windowsill. They are great for relaxation, giving you a little chunk of nature to create and enjoy. Life in a Closed Terrarium: https://youtu.be/y771wlWpzps Watch another terrarium tutorial: https://youtu.be/y0u9k-MSo8U A terrarium is an enclosed ecosystem which can be entirely self-sustaining. Once set up and watered, you will never need to open it again since it will regulate its own water and nutrient cycles. Before we begin, you will need an airtight container. Some good examples include glass jars with clip tops, screw on lids or corks but for my example I’ll be using a large jar with a lid which screws tightly on top, allowing it to retain the moisture in the air. Other equipment you may need includes porous mesh (optional) which allows water through but not substrate, some rocks or gravel, some activated carbon for fish tank filters or charcoal, and a selection of small to medium sized local plants and mosses. The first step is to place about an inch of stones or gravel in the base of your container. Next, sprinkle on a coating of activated carbon sticks or charcoal to help with filtration. The next step is to cut out the shape of the base of your container from the porous mesh. It needs to cover the gravel layer entirely so it’s best to cut it slightly larger than the shape itself. Once this is in place over the gravel, you can add the soil. The purpose of this gravel layer is to separate the standing water from the soil to avoid roots rotting. The water will collect here as a water reservoir then will evaporate, condensate on the walls of your glass container and then fall back down into the substrate, effectively replicating the natural water cycle. This will ensure that the terrarium will naturally water itself. Moving onto the soil, a good soil mix should retain moisture well and be a mix of dead leaves, moss and compost. The soil layer should be deeper than your gravel layer to allow root space. Next, let’s add some plants to the terrarium. I will be making this a native terrarium so will be using plants from nearby parks and gardens. You could use tropical plants for yours instead. Place your choice of plants in the terrarium, paying close attention to your arrangement and how you would like it to look aesthetically. Think about putting larger plants in the background and smaller ones in the foreground. Moss is excellent for ground covering as it will eventually spread and make your terrarium look lush and wild. I’ve used a few different varieties of temperate moss inline and positioned them in-between the main plants. When choosing plants, pick some with a variety of leaf types and shades of green. Also, if you come across any worms or woodlice, set them aside for later as worms will help add nutrients to the soil and woodlice will decompose any dead matter which will help to break down nutrients. These nutrients will be absorbed by the plants through their roots via osmosis. You can also add pieces of bark or wood for landscaping. The final step is to water your terrarium by misting. Spray a very generous amount of water over the plants and moss to help them settle and to provide the ecosystem with water which will be continuously cycled throughout the terrarium. And there we have it, the perfect addition to your windowsill. You now have your very own tiny ecosystem in a jar. Observe how the plant life changes and spreads over time.You may notice that some die but this is normal. Other plants will grow in its place and seeds will spread. Chapters: 00:00 Intro 00:30 What is a Terrarium? 00:56 What You Need 01:31 Gathering Terrarium Supplies 03:03 Step 1: Terrarium False Bottom 03:58 Step 2: Sediment/Soil Layer 05:11 Step 3: Terrarium Plants and Hardscape 06:30 Step 4: Adding Water 07:18 How Terrariums Sustain Themselves 07:42 Step 5: Adding Insects 09:03 How do the Insects Breathe 09:37 Outro Music Used: Blue Ridge Mountains by Fleet Foxes (James LeRouge Cover) Promise by Ben Howard (Rêveur Voyageur Cover) Everything by Ben Howard (Live Version) Natural World Facts is a channel dedicated to bringing you fascinating facts about our natural world, and the wonderful animals that we share it with. Subscribe for more videos! Leave a suggestion in the comments for what animal you would like to learn about next. OUR WEBSITE: http://goo.gl/Ngj5V6 TWITTER: http://goo.gl/U4T8JX

The phylum Cnidaria contains such creatures as jellyfish, anemones, siphonophores and corals. Together, they consist of around 13,000 living species - surprisingly simple, yet beautiful organisms. The importance of these cnidarians cannot be understated. Coral reefs are formed of many millions of cnidarians and are home to staggering biodiversity. Jellyfish are important predators in the open ocean food web, but they serve as food for many other species as well. Sea anemones fulfil a similar role but in the shallows, also serving as hiding places for clownfish. Thus, this unique and abundant group of creatures is integral to the function of many marine communities, from the open ocean to coasts and the benthic zone of the deep sea. 00:00 - An Introduction to Cnidarians 01:04 - The Structure of Cnidarians 01:57 - Cnidarian Polyps 02:09 - Cnidarian Medusae 02:19 - The Life Cycle of Moon Jellyfish 03:10 - The Diversity of Jellyfish 03:23 - The Lion's Mane Jellyfish 03:39 - The Role of Cnidarians in the Food Web 04:29 - Nematocysts Explained 05:13 - The Portugese Man-o-War 06:18 - Colony Organisms: Siphonophores 06:37 - Colony Organisms: Corals 06:54 - The Importance of Corals 07:33 - Symbiosis in Corals: Zooxanthellae 08:23 - Symbiosis in Anemones: Crabs 08:49 - Symbiosis in Anemones: Reef Fish 09:12 - Symbiosis in Medusae 09:27 - The Importance of Cnidarians 09:55 - Conclusion 10:31 - The Deep Sea Hub DEEP SEA HUB: https://naturalworldfacts.com/deep-sea-hub/ Footage used is from YouTube, MBARI, OceanX, NatGeo, the Ocean Exploration Institute and the Schmidt Ocean Institute, as well as other sources. Music Used: First Immersion by Simon Chylinksi (from the game Subnautica) Violet Beau by Simon Chylinksi (from the game Subnautica) Music: Deep - SergePavkinMusic Music Link: https://youtu.be/f_YxebXZeTA​ Cipher by LEMMiNO Siberian by LEMMiNO #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Resources: http://www.oceanicresearch.org/education/wonders/cnidarian.html https://www.earthlife.net/inverts/cnidaria.html https://www.britannica.com/animal/cnidarian#ref31893

Cephalopods exhibit some incredible features. Out of all 8,000 living species of marine invertebrates in the oceans, by far the largest, most deadly and most intelligent are the cephalopods. A class of highly developed mollusks that includes octopuses, squid, cuttlefish and the mysterious nautilus. Their graceful fluid movements, vibrant colour changes and complex brains make them one of the most peculiar and important groups of organisms in our oceans. The largest - the giant squid - measures longer than a school bus, while the smallest could sit atop your finger. Let’s take a closer look at these diverse and often alien-looking invertebrates. 00:00 - An Introduction to Cephalopods 00:48 - The Diversity of Cephalopods 01:12 - The Structure of Cephalopods 01:50 - The Intelligence of Octopuses 02:34 - The Unique Appendages of Squid 03:05 - Bioluminescence in Cephalopods 03:26 - Adaptations of the Firefly Squid 03:59 - How Cephalopods Change Colour 04:56 - Mimicry in the Mimic Octopus Explained 05:38 - Courtship in Cuttlefish 05:52 - The Unique Anatomy of the Nautilus 06:27 - Deep Sea Gigantism in Cephalopods 06:44 - The Creepy Magnapinna Squid (Bigfin Squid) 07:42 - Gigantism in the Humboldt Squid 07:56 - Gigantism in the Giant Squid 08:25 - The Role of Cephalopods in the Ecosystem 09:20 - Conclusion DEEP SEA HUB: https://naturalworldfacts.com/deep-sea-hub/ Footage used is from YouTube, MBARI, OceanX, NatGeo, the Ocean Exploration Institute and the Schmidt Ocean Institute. Music Used: Light by Jorge Mendez AfterInfinity - Science and Medicine Dreams Become Real by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/by/4.0/ Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1500027 Artist: http://incompetech.com/ A Whisper by ann annie Echoes of Time by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/by/4.0/ Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300029 Artist: http://incompetech.com/ Transcend by Audionautix is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/by/4.0/ Artist: http://audionautix.com/ #deepsea #wildlife #nature #documentary #ocean #marinebiology #science #biology Resources: https://www.nationalgeographic.com/animals/invertebrates/group/octopus-facts/ https://ocean.si.edu/ocean-life/invertebrates/cephalopods Dipper, F. (2016). The Marine World: A Natural History of Ocean Life. United Kingdom: Princeton University Press.