Charleston SC offshore fishing report 5/15/18 By Tim Mullins | May 15, 2018 Mahi fishing has been real good in the gulf stream on our full day trips. Our 1/2 day and 3/4 day trips are producing good bootom fishing for grouper,snapper, and black bass. Catching a lot of Amberjacks too. Cobia have just started to show up. Posted in fishing report