Nagigis

Nagigis are a fictional species from the Star Trek universe, specifically appearing in the animated series *Star Trek: The Animated Series*. They are a silicon-based lifeform encountered by the USS Enterprise. Their physical appearance is described as crystalline and multifaceted, often described as resembling large, animated gemstones. Nagigis possess a unique physiology that allows them to absorb and metabolize minerals and energy directly from their environment. They communicate through a series of harmonic vibrations and light patterns, which the Universal Translator on the Enterprise can interpret.

The Nagigis were first encountered in the episode "The Time Merchants," where they resided on a planet rich in exotic minerals. Their society is depicted as peaceful and deeply connected to their geological surroundings. They have a long lifespan and a slow, deliberate pace of existence. Their primary concern is the preservation of their unique planetary ecosystem. While not inherently hostile, they are protective of their home and can be formidable if threatened, using their crystalline structures and energy manipulation abilities for defense. The encounter with the Enterprise highlights the diversity of life in the Star Trek galaxy, showcasing a non-carbon-based organism with a distinct culture and biology.