The Rilnar were tusked bipeds from the planet Ril whose appearance combined aspects of arachnids and aquatic mammals. The three types of Rilnar, the Ril, the Rilna (who were the result of genetic mutation), and the Nar, were distinguished by their hands and eyes. Ril had finned hands, while the Rilna and Nar had clawed, fingered hands. The fingered Rilnar also varied in the number of eyes—while the Nar, like the Ril, had two eyes, the less-common Rilna had four. While most Ril and Nar had claw-like hands with five fingers, some Rilna had three-fingered hands with very thick digits. Though Rilna and Nar only made up about ten percent of the Aqualish population, their fingered hands made them more comfortable with technology. Thus, they were the subspecies more commonly found off-world.