All Episode in Season 4

1. Can Algae Fuel Our Cars? 2. How Do Microorganisms Pee? 3. Becoming Your Own Baby Through Conjugation 4. Getting to Know Our Single-Celled Ancestors 5. Your Screen Is Covered In Human Blood 6. Heliozoa: Round, Sticky, and Covered in Spikes 7. How Diatoms Build Their Beautiful Shells 8. Leeuwenhoek: The First Master of Microscopes 9. The Fantastic Feet of the Microcosmos 10. The Chaotic Life of Seashore Ciliates 11. We Found a Super Rare Microbe! 12. Bursaria: Giant Gravity-Sensing Vacuums 13. The Diversity of Shapes in the Microcosmos 14. Looking at Tardigrade Sperm and Other Reproducing Swimmers 15. Flinching Saves Lives in the Microcosmos 16. Some Eggs Don't Need Sperm to Make Babies 17. We Upgraded Our Microscope... Again! 18. Unsolved Mysteries of the Microcosmos 19. The Beautiful, Brutal Tentacles of Hydra 20. We Dipped Our Lens in Oil to See More Detail 21. The Secret Things Living In Your Drains 22. Revealing the Hidden Colors of the Microcosmos 23. These Algae Curl Up Into a Ball When They Get Stressed Out 24. Where Is This Anemone Really From? 25. The Gruesome Tale of the Hitchhiking Parasite

Season List

Journey to the Microcosmos Specials Journey to the Microcosmos Season 1 Journey to the Microcosmos Season 2 Journey to the Microcosmos Season 3 Journey to the Microcosmos Season 4 Journey to the Microcosmos Season 5 Journey to the Microcosmos Season 6 Journey to the Microcosmos Season 7