Not sure what these are?

[ebeez]

Once again.. I found these little things crawling aroung on some coral. Anyone have any ideas and should I be worried?

http://reefcentral.com/gallery/data/500/125001crtiiter1-med.jpg
http://reefcentral.com/gallery/data/500/125001critter3-med.jpg

 

[LeslieH]

Isopods of the harmless sort.

 

[ebeez]

Phew ! Thanks!