mediumwhat am-i

I can only live were there is light, But I die if the light shines on me. What am I?
Common Wrong Answers
“A plant”
Plants require light to grow, but they do not die when exposed to light; instead, they thrive in it.
“A butterfly”
Butterflies are living creatures that need light to fly but are not harmed by it; they actually benefit from sunlight.
“A candle”
A candle produces light when lit, but it does not die in the presence of light; it simply burns down over time.