A reclusive species encountered by the crew of the USS Protostar, who communicate through sound and vibration and guard crystals coveted by the Ferengi trader Nandi.
The Cymari are a little-known people living on a desert world in the Delta Quadrant. They have had no dealings with outsiders, show themselves cautiously and communicate by resonant sound, which they also use to shape the sand around them.
They appear in the Prodigy episode First Con-tact. DaiMon Nandi, the Ferengi who raised Dal R'El and then sold him, turns up and talks him into borrowing the Protostar for a supposed first contact. Her real object is the valuable crystal the Cymari keep. Hologram Janeway objects that the plan breaks every rule of Starfleet procedure, and is overruled.
Nandi steals the crystal and the Cymari's home begins to collapse. Dal and his friends, ashamed, recover it and give it back, though the chance of a friendly first meeting is gone.