I once took afew hot sause containers that I got a bill miiler, I think, and picked up a few small inverts off of a little island in florida(about 10feet around) and shipped them back in a box to dallas every thing lived except a few shrimp and a weird fish that I found. I hat two other fish make it o.k. total shipping was about 25 dollars for a box about 10x8x6 shipped about 18 containers. just an idea.