Aptasia? Feather duster? Hitchhiker ID pls

[Shadoww]

Noticed this very tiny hitchhiker. Based on the appearance of the base I don’t think it’s aiptasia but not sure. Looks kinda like a feather duster

 

[Shadoww]

I’d have to look it up, but most sponges are completely harmless (there are a few invasive or harmful ones, but they’re relatively rare).

Well wonder if it’s a tunicate or that, would be kinda cool if it was a sponge. Thanks!

 

[Reeflix]

the video did load and it was some kind of copepod or amipod (sorry, i have no idea how to spell that lol)

 

[Reeflix]

Well, the pic looks like two things, one, (this could be wrong) it kinda looks like a vermitid snail, i have something in this tank that looks exactly like you creature in question, two it could be a pineapple sponge. do you mind going in your tank and touching the creature? that will tell me what it is. note that i have both pineapple sponges and vermitid snails in my tank.