r/Springtail

i see some little yellow spheres on some bits of carrot and at first thought it was some kind of fungus but i think they might be eggs?

I saw this thing in my isopod terrarium and asked r/isopods if this was a mite. Someone answered that it was actually a Selaginella tamariscina. I just wanted double check here if it actually is. If it is, how can I care and properly culture them?

My culture got contaminated with some random springs so I’m tapping some out onto a black paper and sorting them into a clean culture with a paint brush. Got this footage of one rolling over and found it weirdly charming.

(If anyone cares this is just a phone camera with a crappy clip on macro lens)