I don't have them thank god but I was reading Eric Borneman's forum and came across a test he did by puting nudibranches in a sealed jar filled with tank water. The nudibranches lived for 7 weeks with no host and with less than optimal conditions

. If that isn't a good arguement for quarantining corals I don't know what is
http://forum.marinedepot.com/Topic90143-9-1.aspx