Fractal urchin

"Even life-forms without midi-chlorians and cellular structures, such as the fractal urchins of Protogeyser, can touch its energy."

- An excerpt from The Jedi Path: A Manual for Students of the Force by Jedi biologist Bowspritz, discussing the ability of animals to touch the Force

Fractal urchins were a non-sentient species native to the planet Protogeyser. Known to the galaxy by the Ruusan Reformation of 1,000 BBY, the species was distinguished by its lack of cellular structures and thus midi-chlorians, symbiotic life-forms that lived inside cells and allowed their host to detect the Force. This characteristic earned the fractal urchins a mention in the Jedi Initiate guidebook The Jedi Path: A Manual for Students of the Force, first published as early as the year 990 BBY. Authored by Jedi biologist Bowspritz, the "Galactic Bestiary" section of the book mentioned fractal urchins as an example of animals that were connected to the Force despite the lack of midi-chlorians. More detailed information on the species was available in the archives of the Jedi Order on the Galactic Republic capital of Coruscant. The Jedi Path, still in use during the Clone Wars that began in 22 BBY, introduced fractal urchins to numerous generations of Jedi trainees.

Behind the scenes
The first and thus far only mention of fractal urchins in Star Wars canon comes from The Jedi Path: A Manual for Students of the Force, a reference book written by Daniel Wallace and published in 2010.