Deep inside the mud at the bottom of the ocean, scientists have found life that is so unusual they’ve had to create new branches on the tree of life to put it on. These life forms are not extraterrestrials: They’re “aliens” from Earth.

Guest: Karen Lloyd, microbiologist and author of Intraterrestrials: Discovering the Strangest Life on Earth

For show transcripts, go to vox.com/unxtranscripts
For more, go to vox.com/unexplainable
And please email us! unexplainable@vox.com
We read every email.
Support Unexplainable by becoming a Vox Member today: vox.com/members
Learn more about your ad choices. Visit podcastchoices.com/adchoices