Ok, WHAT is this?? 2 things just showed up on a truck in my tank, and I've never seen either before..

[Rene']

Small little yellow balls, like eggs are spread around on a rock that has some mushrooms on it. They're the size of small food pellets. Some are in clusters.

The second thing are tiny holes with 2 thin brown antennae coming out of them. (Just ignore the little feather duster)... These all just shared overnight!

Any ideas anyone??

 

[Spare time]

Urchin poop?

 

[AydenLincoln]

I’m seeing spaghetti worms I think.

 

[mdb_talon]

Urchin poop I believe is good guess also. They leave multicolored Dippin dots all over my tank.

 

[WheatToast]

I’m seeing spaghetti worms I think.

The tentacle pairs are more characteristic of Spionid worms, though the coloration is consistent with spaghetti/hair worms.
https://www.reef2reef.com/threads/coral-boring-spionid-worms-an-ugly-bane-to-sps.929439/
Spionid worm:

Spaghetti/hair worm:

 

[Rene']

Urchin poop?

Hahaha,I guess it's possible, but it's the first time I've seen it and I've had my urchin a long time ...

 

[Spare time]

Hahaha,I guess it's possible, but it's the first time I've seen it and I've had my urchin a long time ...

My big urchin shoots out little balls like that in piles.

 

[Rene']

My big urchin shoots out little balls like that in piles.

Ok, it sounds like you guys are right.. Thank you, I feel better!

 

[EeyoreIsMySpiritAnimal]

What is that!! A R2R guide to common new tank hitchhikers.

One of the greatest things about starting a reef tank is getting your live rock in and admiring all the diversity within it. The rock comes to life different creatures. This is a guide that I, along with a very well known critter identifier @KJ , have put together for the new reefer on what...

www.reef2reef.com