Sps worm even after a dip!

[MasterBacon]

Dipped all corals but still this (unknown) worm was eating on my birds nest.

 

[Oscar47f]

Dipping a coral will not remove every pest on it especially because the dip only stuns the full grown parasite and does nothing to the eggs.. you have to keep dipping periodically so you don't give the parasite a chance to reproduce

 

[Oscar47f]

Sorry i don't have a positive ID but it also might be a flat worm but don't take my word for it im only like 20% sure