Eupolymnia crasscornis
Water parameters are being added.
These worms are normally harmless and they look like a worm with lots of thin tentacles poking out of your sand bed or rock work. While mostly harmless they can bother corals if they are active and located near the corals base. This can cause the corals to close up but they are not hurting your corals.
They normally detritus eaters.
No photos yet.