I was looking in my tank today and I noticed some odd things that look like cocoons with feather coming out of them. I did a search but couldn't find anything with the different key words I could think of.
They look like they would be sponges but I know they are not. I'm counting 6 of them growing on my rock...
It's hard to get a good picture of them, so this is the best I can get:
They look like they would be sponges but I know they are not. I'm counting 6 of them growing on my rock...
It's hard to get a good picture of them, so this is the best I can get:

