What are these things!! Please help!

[Breebree293]

I need help! I just found these things in my tank tonight. I tried to look up what they were but all it said was cephalopods and I am not convinced that’s what they are. They are swimming and kind of hoping around the bottom of the tank, just above or on the sand. I just would like to know if they are dangerous to my fish and inverts

 

[Breebree293]

This is it

 

[virtual reality]

So hard to tell. Can you get a picture with your lights on?

(had to save target, and play on vlc to see the video)

#reefsqaud

 

[virtual reality]

Also, welcome to R2R.

 

[ScubaFish802]

I can’t view the video for some reason. Are the things you are seeing very small? Like little bugs? It is possible that they are copepods (cephalopods would be the class that includes octopus and squid I believe)