Single brown spongy tentacle coming from rock

[Mike N]

I spotted this 'thing' and I have no idea what it is. It is growing in a couple different spots on this particular rock, the one pictured is by far the longest. It is slightly translucent, brown in color, ugly as sin.

 

[Lionfish Lair]

Did you mean to include a picture?

 

[Mike N]

Did you mean to include a picture?

LOL I had the intention to do so, yes.
Here it is:

 

[Lionfish Lair]

Does it remind you of anything?

 

[Mike N]

Does it remind you of anything?

It reminds me of ugly.

 

[Lionfish Lair]

It reminds me of ugly.

*coffee hits screen*

Bahahahahahahahahaha!

Does it look like a blade of algae/kelp? More like a sponge/tunicate?

 

[Mike N]

LOL
Definitely more sponge-like. I searched both the sponge and tunicate before posting, but it doesnt look like either. Theres no opening at the top and it doesn't have any appendages. Literally looks like a brown tentacle growing right out of the rock.

 

[scriptmonkey]

Nuke it from space!!!!!! Looks like it giving us the finger! Man I can't wait to put live rock in my tank and find odd stuff like this! That's it...i am calling in sick tomorrow and doing the plumbing!

 

[Lionfish Lair]

Is this a part of it?

 

[Mike N]

Nope, just happens to be next to it. I was able to swipe the bubble away, the sponge remained.

EDIT: Pods are crawling all over it and its about half the size it was 30 minutes ago. Yay pods.