celled organism

This 'fire amoeba' pushes the limit of what's possible for complex life: Introducing Incendiamoeba cascadensis, which translates to "fire amoeba of the Cascade mountain range." This single-celled organism can replicate at temperatures up to 145°F, a new record for a complex organism.

Unique symbiosis bestows magnetic sense to single-celled organism - EurekAlert!

When Food Runs Short, This Single-Celled Organism Turns into Giant Cannibal to Survive

Single-celled organism with no brain is capable of Pavlovian learning