what are these critters

I’m working on turning my nano reef into a macroalgae tank for dwarf seahorses. It’s been up for a year now and these little things have been in there for about 8 months, basically since i added the one extra piece of rock that they’re on. There’s only a few of them on that one rock and none of...

I got the best pictures I could. I recently just noticed these on my glass. I recently seeded my tank with pods. I was hoping that maybe I’m praying that’s what they are?

These white dots appeared on our 2 month reef tank. Please help identifying. Pods ? Ich? Snail eggs? We just cleaned the tank and would like to know if these are harmful. Thank you

What are these saw it on my Zoa then on a different rock plz help

Are these little work looking things bad for my tank? They are one almost every rock