ID Help: Fuzzy Cocoon?

[RubyRed]

I'm pretty much a newbie to salt water and can't even come close to figuring out what this can be.

It's a fuzzy cocoon looking thing. About the size of a large grape. Anyone know? Thanks in advance!

 

[RubyRed]

Another picture of something emerging on some live rock that's 3-4 weeks old:

 

[RubyRed]

I'm pretty much a newbie to salt water and can't even come close to figuring out what this can be.

It's a fuzzy cocoon looking thing. About the size of a large grape. Anyone know? Thanks in advance!

Anyone have any suggestions on how to figure out what this is? Any creatures that might live in there?

 

[herp_mommy]

The fuzzy thing is probably a sponge. Harmless filter feeder. But what are you referring to in the second pic?

 

[mr_X]

The second picture is a tunicate. Also harmless.

 

[RubyRed]

Thanks! On the second picture, the three main pieces were all in question. It's all part of a really vibrant live rock that must have 20 different organisms that we can't identify. It's crazy!

Time to research tunicates!

Below is the piece of live rock that we love so much.