The Khyzon Sea is a body of water on Andor.

In 2376, a storm was raging over the Khyzhon Sea when Thirishar ch'Thane and Prynn Tenmei viewed Andor from orbit aboard the Viola. (DS9 novel: Andor: Paradigm)

In an alternate timeline, Thelin suggested to David Marcus that his mother could have gone to one of the retirement homes on this sea instead of Pacifica. (ST - Myriad Universes novella: The Chimes at Midnight)

The planet Andor
cities and settlements HarbortownLaibokLaikanLor'TanLor'Vela UFP seal Andorian empire
landmarks and institutions Grand StaircaseTherin ParkTower Hill
geography Weyzhiss Mountains
bodies of water Anshim OceanBo'abCentral CanalEmarnl LakeFrost RiverKhyzhon SeaLa'Len OceanLa'Vor SeaLor'Tan StraitMar'itMoss RiverSmathl LakeLake Thalassa
lifeforms alicorneatlirithstinging centipede