id help for these translucent tubes

[Jack_L]

tank is 10 monts old i guess. i see longer version of these in the deeper rock pockets too. they are translucent tubes growing on the udnersides of the rock scape. pic is very zoomed in. that is a choco chip monti below for scale
thanks all

 

[Sam7]

vermatid snails maybe

 

[Jack_L]

i really hope that isn't what they are.

 

[Tahoe61]

That looks like sponge to me.

 

[kevgib67]

I second sponges.

 

[rayadog]

Sponges. Is that a stylocoenellia there?

 

[Freenow54]

I don't think any of you are getting it, just me . He said the bottom was a choco chip monti . I think they are referring to what is above that on the underside of the rock. Am I correct Jack ? I have no idea

 

[Tahoe61]

I don't think any of you are getting it, just me . He said the bottom was a choco chip monti . I think they are referring to what is above that on the underside of the rock. Am I correct Jack ? I have no idea

You mean the sponge on over hang?

 

[rayadog]

Lol I def stopped reading before choco chip monti. I’m more of a picture person but can confirm we are identifying the siphons on the underside of the rock as sponges

 

[Freenow54]

You mean the sponge on over hang?

Yes Like I said I did not have a clue . So even though there is multiple to my eyes they are considered one ? if that is the case that is why I did not understand . Or am I correct , and you understated Which is It Sincerely not being argumentative . I am trying to learn as well. So are they or it something to be concerned about ?

 

[Andamaite]

The clear spiky little tubes look like sponges or tunicates. My rock gets that look to it in very dark areas, especially inside of my filter. They tend to die off and dissolve if moved into good lighting. They don't seem to be harmful toward anything, but can be kind of painful and stabby to bare fingers when moving rock around.

 

[Tahoe61]

Yes Like I said I did not have a clue . So even though there is multiple to my eyes they are considered one ? if that is the case that is why I did not understand . Or am I correct , and you understated Which is It Sincerely not being argumentative . I am trying to learn as well. So are they or it something to be concerned about ?

The little tube openings that look like chimneys are Osculum. Sponges can grow as encrusting, vase, ball......
Yes it's likely one animal, a simple invertebrate that filters water.
There's 1000s of different types, typically marine sponges are benign with a few becoming invasive.
I am surprised you have not seen more varieties in the dark cryptic areas of your tank.
My comment pertains to members not understanding the assignment, which is entirely possible.