What am I?

Against the sun, I protect your eyes and am often worn on the face of spies. What am I?

related riddles

I always run but never walk, often murmur but never talk, have a bed but never sleep, has a mouth but never eat. What am I?

I eat, I live. I breathe, I live. I drink, I die. What am I?

I begin and have no end. Eventually I will be the ending of all that has begun. What am I?