Epizoanthus couchii ??

[mkirkpatrick]

I have something similar to this http://www.actiniaria.com/epizoanthus_couchii.php in our tank. They're almost transparent and have the little knobs on the ends of their tentacles.
But they do not have a stem or foot that I can see? There are three of them in my tank and the body is almost completely level with the rock. I'm not sure if the thing I have is what the link shows but it's definitely similar.

Anyone know if these things are bad?

 

[mkirkpatrick]

This is it!
http://reefcentral.com/gallery/data/500/202433right.gif

I have four of these in my tank and don't know what they are. I found the photo on tampabaysaltwater.com's site.

Anybody have ideas?

 

[wicked_NaCl_h2o]

Can you take a picture of them?

 

[mkirkpatrick]

They don't show up on my camera but I took this image from a website and it's definitely the same thing.

Whatever thing that may be.

 

[dragonette]

hidden cup coral is the most common.

 

[mkirkpatrick]

I googled hidden cup coral and that's it.

Thank you for your help.