White striated on Montipora

[Oropher]

I found this white striated thing on montipora. I don't think it moves or gets bigger.

Is that pest? Anything I should be aware of? I posted a video footage of it. Thanks

 

[KJ]

Look like tunicate harmless.

 

[Oropher]

This is the closed up pic

 

[JGT]

Tunicate, filter feeder, good guy.

 

[Oropher]

Thanks folks