What other SW worms can you find?

[chkltcow]

This morning when I woke up, I glanced in my tank and saw some of the sand under a piece of live rock moved and burrowed out. The lights weren't on yet, so I couldn't really get a good look at it... so I went and got a flashlight. I just wanted to make sure my shrimp or gobies hadn't dug out too much to make the rock fall over on something. While I had the flashlight, I decided to take a look around the rest of the tank too. I caught a glimpse of something moving, and shined the light on it real quick. It was a worm... but... not like the bristleworms I've seen before. This one didn't look like a segmented worm..... it just looked kinda like a normal round earthworm. The front of it kinda resembled a suction cup, or what my button polyps look like when they close up at night. When I shined the light on it, it went back into a hole in the rock.

I'm assuming its harmless as most hitchikers are.... but what is it, and what does it eat?

 

[Navarre]

POssibly a peanut worm? These are unsegmented worms.

If you want to get a better look at these critters at night, use a red flashlight or even some red sweet paper over the lens of a normal torch. 99% of marine life cannot see the colour red as it is the 1st colour to be absorbed out of the warer there is no need to be able to see it This is why in deeper waters you get things like bloodshrimps because they are practically invisible to creatures lower down.