Marathon Fishing Marathon Fishing Charters We’ve been fishing the Florida Keys since the 1950s Find out for yourself why there is no substitute for “Keys Expertise” on a Marathon charter boat: The Sea Dog family caters to experienced and novice anglers alike by offering customized full or half day Marathon fishing charters. We are a full-service fishing charter outfit. We include bait, tackle, and fishing license. We even clean your fish free of charge! Choose from fishing charters that focus on deep sea fishing, reefs and wrecks, tarpon fishing, shark fishing, or gulf and bay excursions. Contact us today for more information about our Marathon fishing charters."