You have to love Kalk, so dive industry just put them their and they stayed on the wrecks and swam south to Florida. No, nice try. Population started in Florida and uses the Gulf stream to go north as larvae. They live well in the waters at the edge of the gulf stream in NC and settle out on the wrecks. I guess the dive operations also put them in 230 feet of water, where you find most of them on the end of the shelf. This one is on us Kalk, no way around it, you and Dr. oldstein can make up all your theorys to try and push it off on something else but you can't hide the fact that their aquarium fish and have been around long before the dive operations found them.