Some weird random fast things running in my zoanthids

[Abzdot]

HI, I am new so I don't know much.

 

I also have a video

also i can see a weird circle thing on a polyp

 

https://imgur.com/a/nzypVpq

[Christopher Marks]

Looks a lot like a copepod to me, common helpful reef organisms. Would you describe it as a super tiny ‘shrimp-like’ crustacean?

[Abzdot]

17 minutes ago, Christopher Marks said:

Looks a lot like a copepod to me, common helpful reef organisms. Would you describe it as a super tiny ‘shrimp-like’ crustacean?

Yes they do look seem like shrimp like crustacean! I thought that they were shrimps but there are hundreds of species and it is difficult to tell if they’re good or bad for a beginner, also in the video there is this little circle thing on one of the polyps, is that good or bad?
Thank you!

[Tired]

Those are not copepods, those are amphipods. Copepods are much, much tinier. Amphipods are generally harmless, but can irritate corals if there are too many of them, and will attack dying corals. Fish will eat them. 

 

I don't see a circle.