Random Liverock Inmates - Help Identifying

[JetJumper]

Just looking for some help / confirmation on what these are:

Bristle Worm?  Good Bad?



WTF?  Found this in the water, its alive and moving, looks like some kind of pupae of something.. no clue.

[groan]

#1 is bristleworm. you can put it back.
#2, not sure. looks like a shrimp. maybe mantis.
http://www.wetwebmedia.com/pericaridanfaqs.htm

[Vincenzo.]

Bristle worm - good.

What looks like a large Amphipod - great.

[Severum]

They are normal live rock inhabitants. You likely have dozens of bristleworms and hundreds of amphipods in your tank right now.

[groan]

put them back! Quick!

[JetJumper]

They have been put back in.  Thanks!