I need an ID

[critofer]

Hey guys, i saw this on my rock today, and now that i really am looking i am seeing them in alot of places. Any ideas? Good? bad? they are yellow with a little red on one end. they look like tiny slugs.

 

[cloak]

Looks like a flatworm. Not good. You might want to get some airline tubing and start siphoning them out one by one.

http://www.melevsreef.com/id/flatworm.html