Hermit crab, sand sifting conch, corralline shell questions

CoralCastle · Jan 14, 2023

Just got these from LFS and though it was normal but starting to wonder. What is that growing on the shells of the hermits? And the sand sifting conch?

Also, I got this shell with corralline growing on it and wanted to aeed the dry rock with it but noticed these yellow worm-like things on the back of the shell? Any thoughts on that/those?

They said it has sponge growing on the inside and read everywhere that all sponges are fine...? Is that correct?

I'm new to saltwater stuff as you can tell

Rtaylor · Jan 15, 2023

It all looks normal and nothing to worry about. The purple is coralline algae.

CoralCastle · Jan 15, 2023

Rtaylor said:
It all looks normal and nothing to worry about. The purple is coralline algae.

I got it Friday, been sitting in a jar with the LFS water. Had to ask about it and wait and now that I know it's fine I am stuck up north and won't be back until tomorrow so it'll have been sitting there for a while. Will the corralline be alive? Praying