Who’s Your Crawdaddy?

Went to this mardi gras house party in Greenpoint. They had food shipped from New Orleans. All so good. The turtle soup is what lured me in. Tasted like pork gravy sauce.  I liked it a lot. Had a girl show me how to eat the crawfish. I think she freaked a little when I said I was allergic to shellfish after I ate two of them. Is turtle soup shellfish?