WTH?!

Anybody have a good explanation of what this is? (You're going to need to zoom in. I'm no videographer ;))
I've seen fibers on my produce before. Today, I picked Rosemary and decided to take a pic of the fibers I was seeing.... and they were moving 😳 I noticed the one on the far left moving first, then attach itself to the leaf. Then I saw the one on the far right moving and decided to take a video. If you get bored, forward until the end and see the one on the far right attach itself to the leaf.