Cryptic Teardrop Crab

I have at least one. Try searching for decorator crab.



"Eric" wrote in message
...
Does anyone know anything about these? I got two of them with my live
rock and see them wandering around the tank now and then. I don't have
a picture of mine, but here's a nice picture of one:
http://www.scubauww.com/crypticteardropcrab.htm

I did a google search and found lots of people that had taken pictures
of them while diving, but no one discussing their benefit/detriment to
the reef tank.

Another newly discovered critter in my tank, which I believe is a
lettuce nudibranch (this is a picture take of it in my tank - it's about
8mm long):
http://www.atreis.com/aiinc/lrnudi1.jpg

Thanks for any info,
Eric