I live in Ft. Pierce and have a 75 FOWLR that is completely native- the water, live sand, fish, crabs, CBS, hermits, mantises, everything. Go to myfwc.com for the latest regs, but only blue crabs and stone crabs are regulated. There's lots of local critters that make good tank inhabitants. A great place to go to look at, or collect critters is Ft. Pierce Inlet State Park, and DuBois park at the Jupiter inlet. Collection of live rock is illegal in state waters, which extend 3 miles from shore, but I collected some prime live rock from Federal waters, 60ft deep off of St. Lucie inlet.