Journey to the Microcosmos: The Many Ways Microbes Eat, Get Eaten, and Poop

Journey to the Microcosmos is a great youtube channel about the microscopic world.
Description: 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.