What are these things?

[cutter2001]

Little white things. They are on my Duncan’s and rock work.

 

[nautical_nathaniel]

80% sure those areas Nerite Snail Eggs

 

[mmorrison55]

Agreed

 

[cutter2001]

Anyway to get them off a Duncan coral?

 

[mmorrison55]

I don’t think they pose any real risk to tank inhabitants and should eventually dissolve on their own, but I’ve read where others scrape them off with stiff brush or dental pick.