Seasons and episodes
1Season 1 Jun. 24, 2019
1 - 1Meet the Microcosmos Jun. 24, 2019- 1 - 2How Microscopic Hunters Get Their Lunch Jul. 01, 2019
- 1 - 3Stentors: Single-Celled Giants Jul. 08, 2019
- 1 - 4How Do Microorganisms Reproduce? Jul. 15, 2019
- 1 - 5
- 1 - 6Tardigrades: Chubby, Misunderstood, & Not Immortal Jul. 29, 2019
- 1 - 7How Do Protozoa Get Around? Aug. 05, 2019
- 1 - 8Diatoms: Tiny Factories You Can See From Space Aug. 12, 2019
- 1 - 9
- 1 - 10How Do Colonies Help Microorganisms Survive? Aug. 26, 2019
- 1 - 11Death in the Microcosmos Sep. 02, 2019
- 1 - 12Euglenoids: Single-Celled Shapeshifters Sep. 09, 2019
- 1 - 13Hydra: Stretchy, Speedy, & Probably Immortal Sep. 16, 2019
- 1 - 14Relax and Enjoy the View Sep. 23, 2019
- 1 - 15Life Without Oxygen? Challenge Accepted Oct. 01, 2019
- 1 - 16Rotifers: Charmingly Bizarre & Often Ignored Oct. 07, 2019
- 1 - 17The Microscopic Circle of Life Oct. 14, 2019
- 1 - 18Amoebas: Occasional Brain-Eaters Oct. 21, 2019
- 1 - 19The Colors of the Microcosmos Oct. 28, 2019
- 1 - 20
- 1 - 21Are Microbes Good or Bad for Humans? Nov. 11, 2019
- 1 - 22Paramecium: The White Rat of Ciliates Nov. 18, 2019
- 1 - 23Microorganisms Are Cleaning the Water You Drink Nov. 25, 2019
- 1 - 24
- 1 - 25What Humans and Stentors Have in Common Dec. 09, 2019
- 1 - 26Gastrotrichs: Four Day Old Grandmothers Dec. 16, 2019
- 1 - 27We Recorded Some Strange Goop. What Is It? Dec. 23, 2019
- 1 - 28What If All the Microbes Disappeared? Dec. 31, 2019
- 1 - 29Desmids: The Symmetrical Algae That's Full of Crystals Jan. 06, 2020
- 1 - 30Microbes Don’t Actually Look Like Anything Jan. 14, 2020
2Season 2 Jan. 27, 2020
- 2 - 1We Filmed Tardigrade Sex! Jan. 27, 2020
- 2 - 2The Highs and Lows of Tardigrade Pregnancy Feb. 03, 2020
- 2 - 3Slime Molds: When Micro Becomes Macro Feb. 10, 2020
- 2 - 4How to Identify Microbes Feb. 17, 2020
- 2 - 5How Cyanobacteria Took Over The World Feb. 24, 2020
- 2 - 6Bacillaria: Distractingly Beautiful Crystal Colonies Mar. 02, 2020
- 2 - 7
- 2 - 8How We Find Our Microbes Mar. 16, 2020
- 2 - 9The Secret Things Living in Your Aquarium Mar. 23, 2020
- 2 - 10Synura: Smelly, Flowery Confetti Mar. 30, 2020
- 2 - 11How to Survive the Microcosmos Apr. 07, 2020
- 2 - 12What Is the Point of Sex? Apr. 13, 2020
- 2 - 13What Are These Vorticella up To? Apr. 20, 2020
- 2 - 14Water Fleas: Look Weird, Adapt Weirder Apr. 28, 2020
- 2 - 15Making Decisions Without a Brain May. 04, 2020
- 2 - 16Peritrich Ciliates: Masters of Long-Range Snacking May. 11, 2020
- 2 - 17The Terrifying Viruses of the Microcosmos May. 18, 2020
- 2 - 18The Micro World Right Under Your Feet May. 25, 2020
- 2 - 19Testate Amoebas: Blobby, Modest Shell Dwellers Jun. 01, 2020
- 2 - 20Colorless Euglenoids: Structure and Function (and Food) Jun. 15, 2020
- 2 - 21The Complicated Legacy of Lynn Margulis Jun. 23, 2020
- 2 - 22The Microbe You Eat All The Time Jun. 29, 2020
- 2 - 23How to Name a Microbe Jul. 06, 2020
- 2 - 24
- 2 - 25Trying to Make Sense of This Overwhelming World Jul. 20, 2020
3Season 3 Aug. 10, 2020
- 3 - 1We Upgraded Our Microscope! Aug. 10, 2020
- 3 - 2How Do Microorganisms Poop? Aug. 17, 2020
- 3 - 3Flatworms: Simple Wiggly Tubes Aug. 24, 2020
- 3 - 4Our Paramecia Are Infected Aug. 31, 2020
- 3 - 5Lacrymaria: Vicious Long-Necked Predators Sep. 07, 2020
- 3 - 6The Fungus That Traps and Kills Nematodes Sep. 14, 2020
- 3 - 7Ophyroglena: The Tricky Transforming Ciliate Sep. 21, 2020
- 3 - 8Can Microbes See Without Eyes? Sep. 29, 2020
- 3 - 9Do Microscopic Immortals Actually Exist? Oct. 05, 2020
- 3 - 10Water Is Thicker When You’re Smaller Oct. 12, 2020
- 3 - 11Didinium: The Paramecium Hunter Nov. 02, 2020
- 3 - 12Some Water Bears Live on Land Nov. 09, 2020
- 3 - 13The Case of the Mistaken Amoeba Nov. 16, 2020
- 3 - 14This Ciliate Is About to Die Nov. 23, 2020
- 3 - 15Strange Stentor Stories Nov. 30, 2020
- 3 - 16The Schoolteacher Who Discovered 700 Ciliates Dec. 08, 2020
- 3 - 17How Did Multicellularity Evolve? Dec. 14, 2020
- 3 - 18Actinobolina: A Tiny Predatory Porcupine Dec. 21, 2020
- 3 - 19Foraminifera: Hard on The Outside, Squishy on the Inside Dec. 28, 2020
- 3 - 20Why Do Bacteria Move Like Vibrating Chaos Snakes? Jan. 04, 2021
- 3 - 21Dinoflagellates: The Algae That Saved an Astronaut Jan. 12, 2021
- 3 - 22Moss & Lichen: Which One Is Actually a Plant? Jan. 18, 2021
- 3 - 23Suctorians: The Ugly Duckling of Ciliates Jan. 25, 2021
- 3 - 24Pelomyxa: The Microbe That's Big Enough to Pet Feb. 01, 2021
4Season 4 Feb. 22, 2021
4 - 1Can Algae Fuel Our Cars? Feb. 22, 2021
4 - 2How Do Microorganisms Pee? Mar. 01, 2021
4 - 3Becoming Your Own Baby Through Conjugation Mar. 08, 2021
4 - 4Getting to Know Our Single-Celled Ancestors Mar. 15, 2021
4 - 5Your Screen Is Covered In Human Blood Mar. 22, 2021
4 - 6Heliozoa: Round, Sticky, and Covered in Spikes Mar. 29, 2021
4 - 7How Diatoms Build Their Beautiful Shells Apr. 05, 2021
4 - 8Leeuwenhoek: The First Master of Microscopes Apr. 12, 2021
4 - 9The Fantastic Feet of the Microcosmos Apr. 19, 2021
4 - 10The Chaotic Life of Seashore Ciliates Apr. 26, 2021
4 - 11We Found a Super Rare Microbe! May. 03, 2021
4 - 12Bursaria: Giant Gravity-Sensing Vacuums May. 11, 2021
4 - 13The Diversity of Shapes in the Microcosmos May. 17, 2021
4 - 14
4 - 15Flinching Saves Lives in the Microcosmos Jun. 07, 2021
4 - 16Some Eggs Don't Need Sperm to Make Babies Jun. 14, 2021
4 - 17We Upgraded Our Microscope... Again! Jun. 21, 2021
4 - 18Unsolved Mysteries of the Microcosmos Jun. 28, 2021
4 - 19The Beautiful, Brutal Tentacles of Hydra Jul. 05, 2021
4 - 20We Dipped Our Lens in Oil to See More Detail Jul. 13, 2021
4 - 21The Secret Things Living In Your Drains Jul. 19, 2021
4 - 22Revealing the Hidden Colors of the Microcosmos Jul. 26, 2021
4 - 23
4 - 24Where Is This Anemone Really From? Aug. 10, 2021
4 - 25The Gruesome Tale of the Hitchhiking Parasite Aug. 16, 2021
5Season 5 Aug. 30, 2021
5 - 1The Dark History of Sea Monkeys Aug. 30, 2021
5 - 2What Is Mold and Why Does It Love Bread? Sep. 06, 2021
5 - 3Why Do Microbes Explode Under UV Light? Sep. 13, 2021
5 - 4The Purple Bacteria That Are Afraid of Oxygen Sep. 20, 2021- 5 - 5Slime Tubes in Search of Sunlight Oct. 11, 2021
5 - 6Journey Through the Body of a Rotifer Oct. 19, 2021
5 - 7The Fish Sucking Lice That Aren’t Lice Oct. 25, 2021
5 - 8Tumbling Down Invisible Highways Nov. 02, 2021- 5 - 9The Arachnid Whose Poop Is Making You Sneeze Nov. 08, 2021
5 - 10
5 - 11Copepods: The Diatom-Devouring King of Plankton Nov. 22, 2021- 5 - 12Microbes in Slow Motion Nov. 30, 2021
5 - 13The Tiny Crustacean With the Oldest Penis Dec. 07, 2021- 5 - 14Looking for Answers in the Skull of a Zebrafish Dec. 13, 2021
5 - 15Creepy Crawly Close-Ups Dec. 27, 2021- 5 - 16Adventures in Being Eaten Jan. 03, 2022
- 5 - 17The Complicated Relationships of the Microcosmos Jan. 11, 2022
- 5 - 18The Double Life of a Fake Jellyfish Jan. 17, 2022
5 - 19The Tiny Worlds Inside of Single-Celled Organisms Jan. 25, 2022
5 - 20Microbe Hunting in Antarctica Jan. 31, 2022
5 - 21Nematodes: The Worm That Sculpted The World Feb. 14, 2022
5 - 22Aeolosoma: Polka-Dotted Vacuum Worms Feb. 21, 2022
5 - 23What Even Is A Species? Feb. 28, 2022
5 - 24The Spatula-Shaped Ciliate Family Mar. 07, 2022
6Season 6 Mar. 28, 2022
- 6 - 1Giant Microscopic Cannibals Mar. 28, 2022
- 6 - 2How Many Cells Are in a Microscopic Animal? Apr. 04, 2022
- 6 - 3The Remarkable Mystery of Land Plants Apr. 11, 2022
- 6 - 4There's More Than Coral at the Coral Farm Apr. 25, 2022
- 6 - 5We Finally Found the Elusive Bristle Worm! May. 02, 2022
- 6 - 6Putting Coral Under the Microscope May. 09, 2022
- 6 - 7How Brownian Motion Helped Prove the Existence of Atoms May. 16, 2022
- 6 - 8How to Not Kill an Extremely Rare Microbe May. 23, 2022
- 6 - 9Mouthless Parasites That Make Their Home In Worm Guts May. 30, 2022
- 6 - 10Can This Baby Rotifer Escape Before It’s Eaten Alive? Jun. 13, 2022
- 6 - 11Bryozoa: Moss Animals That Are Defined by Their Butts Jun. 27, 2022
6 - 12Getting to the Root of Nitrogen Fixation Jul. 04, 2022- 6 - 13
- 6 - 14The Aquatic Snails That Leave a Path of Destruction Jul. 18, 2022
- 6 - 15These Squishy Dots Move So Fast You Might Miss Them Jul. 25, 2022
- 6 - 16Our Tardigrades Got Stuck in a German Post Office Aug. 08, 2022
- 6 - 17These Walking Ciliates Are Frustrating Aug. 15, 2022
- 6 - 18Water Mites: Sticky Dancers with Crystal Poop Aug. 22, 2022
- 6 - 19We Accidentally Grew Crystals Aug. 29, 2022
- 6 - 20Ghost Fleas: Tiny See Through Cyclopses Sep. 05, 2022
- 6 - 21Bacteria That Only Want To Head North Sep. 12, 2022
- 6 - 22The Shared Doom of Microscopic Hitchhikers Sep. 26, 2022
- 6 - 23
- 6 - 24These Rotifers Glue Themselves Together Oct. 10, 2022
- 6 - 25Why Are These Single-Celled Organisms So Large? Oct. 17, 2022
- 6 - 26Sand Is Full of Life and Death Nov. 07, 2022
- 6 - 27The 18th Century Tardigrade Debate Nov. 14, 2022
- 6 - 28Is the Mitochondria Always the Powerhouse of the Cell? Nov. 21, 2022
- 6 - 29
- 6 - 30How We Got The DNA From This Extremely Rare Ciliate Dec. 05, 2022
- 6 - 31A Microscopic Tour Through A Norwegian Fjord Dec. 12, 2022
- 6 - 32The Illuminating Reason Perenema Curl Up Into a Ball Dec. 19, 2022
- 6 - 33The Collotheca Doesn’t Mind Eating Its Own Babies Jan. 16, 2023
- 6 - 34The Indecisive Evolution of Gastrotrichs Jan. 23, 2023
- 6 - 35How Electricity Brings Order To Chaos Jan. 30, 2023
- 6 - 36The Microcosmos Is Made of Star Stuff Feb. 06, 2023
- 6 - 37Your Mouth Is A Cave For Microbes Feb. 13, 2023
- 6 - 38Microscopic Space Travelers Feb. 20, 2023
- 6 - 39These Microbes Wear Chain Mail Made From DNA Feb. 27, 2023
- 6 - 40How Does Yeast Make Bread? Mar. 06, 2023
- 6 - 41How Do Microbes Make Decisions? Mar. 13, 2023
- 6 - 42How Your Blood Keeps You Alive Mar. 20, 2023
- 6 - 43Can Bacteria Eat Plastic? Apr. 03, 2023
- 6 - 44Lichen: The Mysterious Love Child of Fungi and Algae Apr. 10, 2023
- 6 - 45The Microcosmos Is A Very Stressful Place Apr. 17, 2023
- 6 - 46These Mites Are Probably On Your Face Right Now Apr. 24, 2023
- 6 - 47The Incredible World of Bacterial Communities May. 01, 2023
- 6 - 48The Tube-dwelling Architects Of The Microcosmos May. 08, 2023
- 6 - 49How To Kick Off Your Microscopic Journey May. 15, 2023
- 6 - 50Unboxing Our Microcosmos Microscope! May. 22, 2023
- 6 - 51The Complicated Sex Lives of Hydra Aug. 07, 2025
- 6 - 52When Is A Fungus Not A Fungus? Aug. 07, 2025
- 6 - 53The Cryptic Origins of Yogurt Aug. 07, 2025
- 6 - 54Why Beggiatoa Are Stuffed Full Of Sulfur Aug. 07, 2025
- 6 - 55We Don't Know Why Moth Wings Glow Aug. 07, 2025
7Season 7 May. 29, 2023
- 7 - 1The Complicated Sex Lives of Hydra May. 29, 2023
- 7 - 2When Is A Fungus Not A Fungus? Jun. 05, 2023
- 7 - 3The Cryptic Origins of Yogurt Jun. 12, 2023
- 7 - 4Why Beggiatoa Are Stuffed Full Of Sulfur Jun. 19, 2023
- 7 - 5We Don't Know Why Moth Wings Glow Jul. 10, 2023
- 7 - 6Avoid These Tiny Bits of Killer Fluff (If You Can) Jul. 17, 2023
- 7 - 7This Neon World Is Inside Your Fruit Jul. 24, 2023
- 7 - 8Up Close With The World's Deadliest Animal Jul. 31, 2023
- 7 - 9Falling In Love With Microscopy Aug. 07, 2023
- 7 - 10The Tiny Worlds Inside of Puddles Aug. 14, 2023
- 7 - 11Why Are Some Birds Blue? Aug. 21, 2023
- 7 - 12The Electric Relationship Between Plants And Bees Aug. 28, 2023
- 7 - 13Floating Cities of Scum Sep. 04, 2023
- 7 - 14Liverworts Use The Rain To Make Their Clones Sep. 11, 2023
- 7 - 15Bacteria That Survive In Gelatinous Colonies Sep. 18, 2023
- 7 - 16Is It Possible To Photosynthesize In The Dark? Sep. 25, 2023
- 7 - 17This Predator Is A Shape-Shifter Oct. 02, 2023
- 7 - 18Blood-Sucking Escape Artists Oct. 09, 2023
- 7 - 19This Microscopic Killer Wears Its Victims Oct. 16, 2023
- 7 - 20These Dancing Worms Are Surprisingly Useful Oct. 23, 2023
- 7 - 21Some Ciliates Are Hiding a Secret Weapon Oct. 30, 2023
- 7 - 22Can Microbes Just Appear Out Of Nowhere? Nov. 06, 2023
- 7 - 23Trying To Solve Some Micro Mysteries Nov. 13, 2023
- 7 - 24What Do These Algae Do With Four Genomes? Nov. 20, 2023
- 7 - 25The History of Red Algae Dec. 11, 2023
- 7 - 26These Mites Give Cheese Its Flavor Dec. 18, 2023
- 7 - 27Why Picocyanobacteria Might Just Outlast All Of Us Jan. 09, 2024
- 7 - 28We Built A Tardigrade Trap, And It Worked Jan. 15, 2024
- 7 - 29The Microbial Universe That Makes Kombucha Jan. 22, 2024
- 7 - 30This Microbe Hasn't Been Seen Since The 1930s Jan. 29, 2024
- 7 - 31What Makes A Microbe Rare? Feb. 12, 2024
- 7 - 32These Tiny Crustaceans Hate Change Feb. 19, 2024
- 7 - 33This special diatom is having a very bad day Feb. 28, 2024
- 7 - 34We Fed Our Microbes Blood So You Don't Have To Mar. 04, 2024
- 7 - 35
- 7 - 36How Do We Find Cancer? Mar. 25, 2024
- 7 - 37Watch a Stentor Fix Itself Apr. 15, 2024
- 7 - 38This Amoeba Made Armor From Its Dead Enemies Apr. 22, 2024
- 7 - 39We Found Something Strange in Portugal Apr. 29, 2024
- 7 - 40We've Been Looking For This Purple Amoeba for 6 Years! May. 06, 2024
- 7 - 41
- 7 - 42Tiny Mysteries from the Black Sea May. 28, 2024
- 7 - 43We Found a Very, Very Tiny Kraken Jun. 10, 2024
- 7 - 44How Does The Microcosmos Change With the Seasons? Jun. 24, 2024
- 7 - 45Why Are Ciliates So Hairy? Jul. 09, 2024
- 7 - 46What These Microbes Teach Us About Free Will Jul. 22, 2024
- 7 - 47Microscopic Beauty from a Nuclear Test Site Aug. 05, 2024
- 7 - 48Why Do Planarians Have Those Triangles on their Heads? Aug. 19, 2024
- 7 - 49A Collection of Tiny Universes Sep. 03, 2024
- 7 - 50Some Microbes Also Take Naps Sep. 16, 2024
- 7 - 51We Answer Your Questions! Sep. 30, 2024
- 7 - 52We Spilled Ink On Our Slides to See What Would Happen Oct. 14, 2024
- 7 - 53The Future of Microscopy (and end of our Journey) Oct. 28, 2024
Video trailer
Synopsis
Take a dive into the tiny, unseen world that surrounds us! With music by Andrew Huang, footage from James Weiss, and narration by Hank Green, we want to take you on a fascinating, reflective journey through the microcosmos. 
Original title Journey to the Microcosmos
TMDb Rating 7 2 votes
First air date Jun. 24, 2019
Last air date Oct. 28, 2024
Seasons 7
Episodes 236
Average Duration 10 minutes
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