Does anyone know what this thing is? Should I killed it?

[msavoy]

Looks like some type of worm or something.

 

[vetteguy53081]

Flatworm and yes remove it
Not that this type is dangerous but in numbers they can smother coral blocking the light needed for zooxanthellae which is their building blocks
Hopefully no eggs from this guy

 

[msavoy]

Flatworm and yes remove it
Not that this type is dangerous but in numbers they can smother coral blocking the light needed for zooxanthellae which is their building blocks
Hopefully no eggs from this guy

Thank you very much for your help, I just removed it. I’ll keep an eye out for others.

 

[vetteguy53081]

Thank you very much for your help, I just removed it. I’ll keep an eye out for others.

Look also for eggs which are super tiny