from experience i can say that the cured fiji rock isn't going to have anything live on it except a few feather dusters, it sits for a week or so in fiji getting sprayed with freshwater to kill the organisms on it which is why people don't complain about getting crabs and hitchhikers from it, uncured florida rock is going to have a ton more live because places like TBS(tampabaysaltwater) pull it out of the ocean and ship on the same day or the next day.