The Omearans were a humanoid race native to the Alpha or Beta Quadrants. They were distinguished by their two hearts, plus a number of other extra internal organs, as well as pale skin with green pigmentation and extended fingers.
One in ten thousand Omearans are born with the ability to form a mental link with the technology of the Omearan Starsearcher. During their war with the Sarimun, many young Omearans were linked in such a way and were sent out to fight.
The United Federation of Planets made first contact with the Omearens in 2376, via Omearan Starsearcher 7442. (SCE eBook: Hard Crash)