What do you call a fly with no wings?

Tiny and bright, A flash of heat that brings light. Can start a great fire Or dance on a wire

I’m hidden deep below, helping trees and teeth stay anchored where they grow.

In oceans deep, I deftly steer, Eight arms swirl, with no fear. In ink's embrace, I leave no trace, A cephalopod's dance, quite clear.

The dove came back with my leaf, and I was a goddess's gift to a city. I grow on branches that carry nothing less than peace.