Good or bad on my euphyllia

[Anthygod]

Hello
So I got a new euphyllia today and now in the evening I spotted that „thing“ on the side of it . It completely disappears when something is moving fast around the euphyllia. Hopefully someone can help me thank you !
sry it was really hard to get A good pic of it

 

[Crabs McJones]

Looks like a feather duster. Very common and harmless

 

[Anthygod]

Looks like a feather duster. Very common and harmless

Thank you very much for the fast reply ! So I just do nothing and leave it there ?

 

[Crabs McJones]

Thank you very much for the fast reply ! So I just do nothing and leave it there ?

Yup it won't harm anything and the coral will continue to skeleton out. It'll filter small particulates out of the water and eat them