*Gorgon Kryphakous* or Listening Gorgon. A soft coral with dull olive filaments. A predatory filter feeder that sways with the current like kelp. Not known to be hostile or harmful to humans, but remains under observation (see notes below).
1. Sound sensitive Dissecting the Listening Gorgon's basal filaments reveals a web of vibration-sensitive cilia hidden in its soft, gelatinous core. These can detect movement through water at resolutions not seen except in the airflow sensors of clip-winged gnats on Kepler-22b - enough to pick up the swish of a tail through miles of water.
2. Reactive orientation At first the listening gorgon appeared inert, but its movement is simply too slow to be perceived. It has been observed to orient itself over time to specific low-frequency vibrations. It will do this even if food is less abundant in that direction.
3. Silent. The Gorgon kryphakous has no vibration-producing organs. It emits no detectable signals - no chemical plumes nor bioluminescence. It is essentially silent across all known communication spectra.
ASSESSMENT: Requires further analysis. One leading hypothesis suggests that the Listening Gorgon once tracked the low-frequency vibrations of a massive, slow-moving marine species - now possibly extinct, or still undetected in the deeper zones of Proteus’s oceans. If so, the open question is whether this trait evolved in response to an ecological partner... or a threat