mysterious creatures

[marinetankman]

hi there , i was cleaning my tank today and i have some large pc of dead coral that i leave in my tank i started to scrap the coral when as i did i notice these small 1/2'' tube like things come out of the coral does any one know what these are and should i be concerned also noticed web like cocoon on another pc of coral ?

 

[NaH2O]

Hmm...any chance of getting a picture?

The tube things could be a couple of things. They could be empty fan worm tubes, but I'm taking a guess that they are vermetid snail tubes. Have you noticed any "web-like" strings coming out of them?

here is a picture of a vermetid snail:

On the web-like Cocoon....I wonder if it is a scypha sponge. They look like the end of a Q-Tip with some spikes out of the tip. Be careful if this is what you have, as they can give you a good poke. here is a link to a pic of one: Scypha ciliata

 

[marinetankman]

the string stuff looks familar,but i never seen these things lurking around they just kinda come out of the coral when i took it out and brushed it , the cocoon thing looks more like a pc of cotton , i am still working on the picture thing

 

[Angelscrx]

the string stuff looks familar,but i never seen these things lurking around they just kinda come out of the coral when i took it out and brushed it , the cocoon thing looks more like a pc of cotton , i am still working on the picture thing

Sounds like sponges on the cotton thing. You can get them in all kinds of colors. I have white, pink, and yellow sponges in my tank. It doesn't sound like anything to worry about though but pictures would help.

 

[Elmo18]

The 1/2" tube things you describe could be several things...pineapple sponges (if it is off white in color), a calcacerous sponge (if it is whitish at the base and bright green at the top half), etc.

As for the cocoon looking thing...it's probably another type of sponge.

- Elmo

 

[Boomer]

they just kinda come out of the coral

This sounds like a Ctenophoran, aka comb jellies . They are qutie common in reef tanks and "come out of the coral". These are almost always Coeloplanidae, that live on the bottom or in symbiosis on the surfaces of specific plants or animals.

Here are a couple of pics

http://www.seaslugforum.net/display.cfm?id=11713

 

[Angelscrx]

Cotton ball looking things could be sea squirts!

 

[Boomer]

Bump

Marine did you see my post ?