http://reefkeeping.com/issues/2003-08/sp/index.php
http://reefkeeping.com/issues/2003-10/sp/feature/index.php
http://en.wikipedia.org/wiki/Cryptocaryon_irritans
It's Ich, not Ick.
Marine Ich isn't the same as freshwater Ick.
http://media.photobucket.com/image/marine%20Ich/plecosword/FISH/20g/2008-07/icky004-1.jpg
http://www.reeftime.com/images/ich-clown.jpg
Google Images works wonders.
Another few helpful links...
http://www.seahorse.org/library/TESTING/ich/newich.shtml
https://forums.saltwaterfish.com/t/127007/faqs-fish-diseases-treatments-quarantine-health-info
https://forums.saltwaterfish.com/t/127010/diseased-fish-pictures
Marine Ich has been the bane of aquarists for a hundred years. There are really only three treatments for it that are the most effective. You'll find out how to diagnose and treat it in one or more of the threads that I have listed.