big jellyfish farm

Me and my granddaddy Jerome have found many jellyfish near the local bay at myrtle beach that were injured so we took them back to our farm and made a makeshift farm to rehabilitate them since my granddaddy Jerome used to be a vetenarian and used to rehabilitate other animals...so far every jellyfish has gotten better and been released....but today I found a jellyfish that has rainbow colors and it is near myrtle beach and I heard it was a box jelly fish but not sure and was wondering if anyone might know what kind it is..i don't have a camera to take a picture of it though. Sorry my name is Alex and me and my grandaddy Jerome would appreciate any feedback...thanks and God Bless