The characteristic bright blue swirls are visible in a simu-tunnel.
A hyperspace tunnel, also referenced as a simu-tunnel or hyper tunnel, represented a tunnel-shaped section of realspace. This allowed for secure passage through hyperspace, an alternate dimension. While most species depended on hyperdrive technology to generate these tunnels, the purrgil were able to create them organically. To anyone traveling through it, a simu-tunnel appeared as a spiral of blues.
Naley Frifa sported a tattoo depicting an artistic representation of a hyperspace simu-tunnel on her neck and the top portion of her torso.