Florida is known for space exploration -- but you'd rather rocket across the ocean than through the atmosphere. Swap aeronautics for a nautical adventure with today's deal from Mabru Day Cruises: Pay $40 for admission for one on a 2.5-hour river ride, which includes captain, fuel, soft drinks, water, ice, and snacks (a $100 value). Head to SW 20th Street to board The JouJou, a 38-foot yacht, and then relax as a captain ferries you and up to nine other passengers down to Miami. Enjoy swimming, snorkeling or kayaking around Key Biscayne -- or simply take in the breathtaking views of South Florida -- before discovering new waterways on the way back. The vessel is fully equipped for fun with a refrigerator, a barbecue, two fresh-water showers, and a sound system. This family-owned-and-operated business has more than 25 years experience, so you'll have a blast -- from the very first moment your craft launches off from the dock.