Tube-like predators from Ruach, able to swim like sea snakes in gas giant atmospheres. They get their name for their extremely powerful sound, which they use for navigation, internal signaling, mating displays and as a sonic weapon. Mirrored Owl hosts.
Ruach singers mostly consist of cellular tissue, where the individual cells are mostly filled with fluid in a gas phase, rather than a liquid phase. This means that they have very low overall density, and are slightly buoyant in the gas giant's atmosphere.