Dear Loni and Henk,

Thanks much for the info.  I do recall that copepod parasites of fish are
sometimes referred to as "sea lice"", but I was pretty sure those didn't
bother people.  I didn't know larval jellyfish are also tagged with that
name.  Thanks for the website.  I also found one myself, based on Joni's
information:

http://www.fau.edu/safe/sea-lice.html

        Paul M.