Something new appeared and idk what it could be

[Jeremy Brito]

Today I noticed 4 little tubes approx 1 to 2 inches in length made of he substrate like if something cemented the sand and gravel together to make a pipe. I noticed these tubes randomly laying on the rock work and one stuck to the side of the urchin
Any ideas what it is what made it and what they do in it lol

 

[diana a]

Worm can make a tube and camouflage it with sand. It’s hard to view the photos. Is there a tube with sand or just a trail of sand?

 

[Jeremy Brito]

I thought at least the last two would be clear enough but it's a legit tube or roll of sand and gravel

 

[diana a]

If it's a tube with sand on the outside, that is usually made by a worm. It camouflage the tube with sand. Now to find out which worm it is

 

[Cjk90978]

Looks like potentially Spaghetti worm, I have similar in my tank. Does one end of the worm let out like a white/clearish tentacle? If it does, its definitely spaghetti worm. From what I read you can remove them easily, but they are of no harm to the tank and I've left my 2 alone.