Thanks Ted...pulled these from the WetPixel forum, as a list of good websites for critter identification. Thought they might be useful here, possibly even as a sticky.
General
http://www.reefimages.com/
http://www.edge-of-reef.com/ (Indo-Pac)
Fish
http://www.fishbase.org/search.html
http://www.amonline.net.au/fishes/identify/index.htm
http://www.scuba-equipment-usa.com/marine/index.html
Nudibranches
http://www.seaslugforum.net/welcome.htm
Cephalopods
http://www.cephbase.utmb.edu
http://www.dal.ca/~ceph/TCP/
General
http://www.reefimages.com/
http://www.edge-of-reef.com/ (Indo-Pac)
Fish
http://www.fishbase.org/search.html
http://www.amonline.net.au/fishes/identify/index.htm
http://www.scuba-equipment-usa.com/marine/index.html
Nudibranches
http://www.seaslugforum.net/welcome.htm
Cephalopods
http://www.cephbase.utmb.edu
http://www.dal.ca/~ceph/TCP/