Source: Starfinder Core Rulebook p.50
Shirrens are Medium humanoids with the shirren subtype.
Shirrens' sensitive antennae grant them blindsense (vibration)-the ability to sense vibrations in the air-out to 30 feet. A shirren ignores the Stealth bonuses from any form of visual camouflage, invisibility, and the like when attempting a Perception check opposed by a creature's Stealth check. Even on a successful Perception check, any foe that can't be seen still has total concealment (50% miss chance) against a shirren, and the shirren still has the normal miss chance when attacking foes that have concealment. A shirren is still flatfooted against attacks from creatures it can't see.
Shirrens are used to working with others as part of a team. Once per day, as long as an ally is within 10 feet, a shirren can roll a single attack roll or skill check twice and take the higher result.
Shirrens are eager to learn about new cultures and societies. Shirrens receive a +2 racial bonus to Culture and Diplomacy checks.
Shirrens can communicate telepathically with any creatures within 30 feet with whom they share a language. Conversing telepathically with multiple creatures simultaneously is just as difficult as listening to multiple people speak.