Any idea what this big bulb looking thing is on my frag?

[Readingexcalibur]

Any idea what this big bulb looking thing is on my frag? Seems to be growing. Maybe irritating the polyps.

 

[Petrichor]

It looks like it could be a type of sponge, but the weird veiny lines in the first picture don't match up with the types of sponges I'm familiar with. Can you touch it and see if it's soft like a sponge?

 

[Nu-Nu the eel]

Is it a type of algae?

 

[nikki_kaiser]

Looks like a ball sponge! Kind of ironic because I just finished researching sponges for my aquarium! See if what I post looks like what you have (if it is that's cool!):

http://www.aquacon.com/sponge.html

 

[nikki_kaiser]

Oh but one more thing, and maybe you have sponges, but when reading about them, they can release toxins in your tank if they die. Do all sponges do this?

 

[Readingexcalibur]

Does not seem to resemble any in the photos, I am going to bust out the DSLR and upload them. This thing is weird!

 

[nikki_kaiser]

Can you get a picture with more light? I'm curious as to what it is! Could it be some kind of tunicate? Also, if you have something to help identify things or a site let me know! I've got a piece of live rock that has some weird stuff on it and would love to positively identify it so I know how to take care of it!

 

[Readingexcalibur]

Hopefully these help. I am pretty sure its not a sponge, but i have been wrong so many times before, lol.

 

[kdpuffer]

Looks like a sponge to me and the veiny things look to be algae.

 

[Readingexcalibur]

Looks like a sponge to me and the veiny things look to be algae.

Awkwardly, the veiny things seem to extend at night like tentacles.

 

[Bonessurf]

I give up! So what is it!?

 

[54seaweed]

its a sponge get it out of your zoas before it suffocates them
just lost 2 zoas to those ugly nasty sponges

this is what the sponge did to my zoas was a real nice piece till sponge got it
killed over 1/2 wish camera took clear picts