What exactly is the brown thread my clam is excreting?

[justin-branam]

title says it. is that just the clams waste? it is usually about 8 or 10 inches before it breaks off. just wondering if i should try to clean this gunk out every once in a while or just not worry about it. thanks.

 

[ExoticWonders]

sounds like waste, but a picture is worth a thousand words!

Mario

 

[dvmsn]

zooanthelle, don't worry its not uncommon

 

[PSEUDOREEFER]

zooxanthellae