fluorescent mint green thingy?

[dunl]

What exactly is this? It appeared in my tank this week, and I have no idea what it is.....I know it is a crappy picture, but it is the best I can do. Looks like a fluorescent mint green tiny elastic all crumpled up.

Thanks.

[Der_Iron_Chef]

My best guess is some sort of tube worm or sponge? Huh...

[dunl]

But the tank has been going for over 6 months now (probably closer to 9), and I've only added a foxface.

[Der_Iron_Chef]

Oh, that doesn't matter...over a year in and I'm still finding new things popping up :)

[dunl]

I can understand that.

But a FOWLR tank, containing mostly tufa rock and some live rock, with nothing added, nothing growing in there besides the fish and algae?

Weird.