What is this on my hammer?

[Joshua Huff]

The spiral things in the photo have been on my hammer coral a few weeks, that I've noticed, and I don't have a clue what they are. Can someone tell me what's going on? Is it a parasite? Is it harmful? This hammer has not been opening up as full as it used to.

 

[Crabs McJones]

The spiral things in the photo have been on my hammer coral a few weeks, that I've noticed, and I don't have a clue what they are. Can someone tell me what's going on? Is it a parasite? Is it harmful? This hammer has not been opening up as full as it used to.

Vermedit snail. Filter feeder, most consider a pest and can reproduce pretty quickly. you can either scrape it off, or put superglue over the hole opening to kill it off

 

[jda]

Take the frag out and cut them off with bone cutters. People curse them after a while and they spread everywhere.

 

[Branespikin]

Yeah pull out the plug and pry it iff. They can het invasive. I got that problem now. They let out a stringy little net which irritates zoas and other corals.

 

[Joshua Huff]

Ok looks like I better remove them! Thank you all

 

[Garbonzo]

Careful you don't stab yourself as they're sharp as.....