I'm making a conversion for Star Wars, and am currently working on the species. One of the species called the Togruta have montrals which give them ultrasonic location.
Montral wookiepedia entry:
"Montral was a word used by the Togruta to refer to the hollow horns atop their heads. The Togruta possessed a form of passive echolocation by means of their hollow montrals which allowed them to sense the proximity and movement of physical objects around them. They seemed to be related to the Twi'lek lekku."
The Togruta description can be found here: http://starwars.wikia.com/wiki/Togruta
I have been trying to figure out how to most accurately describe this in their basic profile. I'm thinking possibly either a +2 to notice of some sort (maybe +2 to notice movement within certain amount of area?), or racial ability of using Darksight. I've looked for echolocation in the Sci-fi Bestiary toolkit and the fantasy bestiary, fantasy companion, and the core rules book, but didn't see it.
Would love any feedback. Thanks!