spionid worms

Hello… I have been experimenting with different treatment options for Coral Boring Spionid Worms. I did not realize there was a worm that could tick me off more than Vermetid snails. When I finally kept the Vermetid’s out (100%), I’m so blessed to discover these little devils. Pic unknown...

Posted are a few photos of what I believe to be either spionid worms or vermetid snails. I am leaning towards the spionid worms because I have not seen any “web like” material come out of the end, but if anyone knows please let me know? if they are spionid worms, are they harmless? Thank you!

I've been researching all morning and think I've identified these as spionid worms...correct me if I'm wrong. They are all over the base of a hammer coral I have in my coral quarantine tank. I know spionid worms are harmless and good in a tank, but are there any problems having this many...