face_with_colon_three immortal tissue found in sea cucumbers.
Scientists have stumbled upon what they’ve dubbed real-life “zombies.”
These seemingly immortal things—amputated tissue from the sea cucumber species Psolus fabricii— appear to exist in a gray zone of life. The discovery, described in a study published on May 27 in the journal Science Advances, could be useful for future research but also raises philosophical questions about what it means to be alive.
Sea cucumbers are an ancient type of spineless creature that sit on the ocean floor. They’re known for their remarkable regenerative powers; some species can be split in half, after which the separated sides will regrow their missing parts.






