H'atoria was a small Klingon colony near the Federation border.

WARNING! This article contains MAJOR spoilers for the recently released novel A Singular Destiny. Caution is advised.

The world had very few landmasses, and was mostly covered in oceans. It also featured a native amphibious species called the Selsseress.

In early 2381, it was one of the many worlds devastated by the Borg attack, leaving virtually nothing behind, only a few surviving Selsseress. About 3 months later, the now-abandoned world was conquered by the Kinshaya, as part of the new offensive against the Klingon Empire. (ST novel: A Singular Destiny)

In an alternate future timeframe created by Q, Worf was governor of H'atoria in 2395. (TNG episode & novelization: All Good Things...)
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