Highly vulnerable to disease and infection, the quarians wear their enviro-suits to protect them from outside contamination. The race's expulsion from their homeworld of Rannoch forced them to live aboard spaceships for generations, and this sterile environment has dramatically reduced their naturally weak immune systems. The most noticeable aspect of the quarians is their signature enviro-suits, which they must wear at all times. While quarians are never seen in-game without their enviro-suits, under certain circumstances it is possible to see a picture of Tali without her mask on in Mass Effect 3. This picture reveals that quarian faces look quite similar to humans', with the main differences being dark grey eyes and black markings along the forehead and neck. Their knees are also bowed backwards, similar to a bird or the back leg of a horse, giving them a unique silhouette. Quarians possess only three fingers and toes on each hand and foot. Physically, quarians do not differ greatly from humans: Both are bipedal humanoids with two legs, two arms, two eyes, a nose and a mouth.

Mass effect tali no mask