We have this critter on the west coast called abalone.  Essentially it's a large marine snail but easily the best thing I have ever tasted.  There is no commercial fishery for them in CA any more.  15+ years ago my dad saw abalone "steaks" at the big fish market in Los Angeles.  Back then they were $60 per pound with a 5 pound minimum purchase.  We can still dive for these in northern California but it is a free diving sport fishery only.  No tanks and a "punch card" that limits you to 3 per day and 24 per year.  Needless to say there is a robust poaching industry.  In an effort to make it harder for poachers, California Dept. of Fish and Game this year requires that each abalone have a numbered tag zip-tied to it.  In their infinite wisdom... they issued paper tags.  This video was taken by one of the guys from my local fishing forum a few days ago.  I sent it on to the head biologist for Cal DF&G with a suggestion for improved tagging material.
http://www.youtube.com/watch?v=EhVm3y8dJgU