strange parasite

I received a few mariculture acro frags today and I spotted a spider shaped object on them. It’s like a part of the acro that I can’t scape it off. Wanted to share here to see if anyone has any idea. Thank a lot!

Hello, Two days ago I saw that my purple-metallic montipora colony started losing tissue. Yesterday my colony was dead. Tissue was turning into brown jelly at night and at the morning skeleton was white. Day before montipora started daying, I lost Acropora frag which i decided to move after...

Good evening reefers!! You guys have provided great information to a new reefer like me and I thank you all for the vital input that you guys provide! Anyways, I have these hair like growths on a rock that I got from my LRS and have no idea what it is. My wife thinks they are worms but I don’t...