ID request: yellow blobs on my anthelia rock?

[bludeath5]

Second ID post of the night, sorry! I noticed under my anthelia rock these yellow blobs a while back, haven't moved over the last week that I have noticed. Any ideas?

The top one is easier to spot, the other is below and to the right, a bit in the shadows.

 

[fishguy242]

hi,yellow sponge

 

[sunken3]

Second ID post of the night, sorry! I noticed under my anthelia rock these yellow blobs a while back, haven't moved over the last week that I have noticed. Any ideas?

The top one is easier to spot, the other is below and to the right, a bit in the shadows.

yep - yellow sponge.. i have, black, grey, orange and yellow.. yellow is the nicest to look at.

 

[bludeath5]

So what you are saying is I now have Sponge Bob in my tank? Cool! I assume they won't be a pest?

 

[sunken3]

So what you are saying is I now have Sponge Bob in my tank? Cool! I assume they won't be a pest?

not if you make it some square pants.