Hitchhiker? Tatical strike Caulerpa?

[TheKraken]

Dear friends,

I found a strange growth on my sump Caulerpa and would like to figure out if this is something good like a featherworm or something dangerous like a full on Caulerpa strike force amassing at the border for an invasion tomorrow.

Tank is a 120 with 4X T5 and live rock. Sump is a 30 gal glass DIY with a 7" filtersock on the drain. 24 hr lighting in the sump. I was just gifted some macroalgea on Thursday.

 

[TheKraken]

I understand that this is Caulerpa taxifolia and looked up sporulation pictures with no luck. If you have a picture of Caulerpa taxifolia sporulation please post.

 

[iroll253]

is a Sponge i believe.

 

[psb]

+1 for a baby sponge. Hard to tell from the pic.

 

[Martyfree]

Sponge. I have many in my sump.

 

[returnofsid]

nicknamed Pineapple Sponge. Beneficial filter feeder.

 

[TheKraken]

Thanks everyone!

A Syconoid sponge maybe?