On three-hour cruise, certified marine biologist narrates as passengers watch whales & dolphins surface alongside vessel

Pontoon boat with sun deck & stereo carries up to 13 passengers across Old Hickory Lake for full day of boating

Instructors teach water-gliding basics during all-day surf sessions at Surfside Beach, with free shuttle from downtown Houston

Captain whisks groups on custom itineraries along Miami coast aboard 45-foot yacht equipped with snacks, soda & high-tech A/V system

Parties of up to 10 adventure to Peanut Island, enjoy mansion-spotting excursions or relax in sunshine aboard 21- & 22-foot vessels

Up to three passengers mount Yamaha VX 110 WaveRunners to traverse nearby lakes

On three-hour cruise, certified marine biologist narrates as passengers watch whales & dolphins surface alongside vessel

Instructors with U.S. Coast Guard captain's licenses guide students during three- to four-hour lessons aboard sailboat Hunter 216

Renovated WWII amphibious cruiser ushers passengers across dry land & waterways in one-hour tour of Tennessee River & surrounding landscape

Experienced instructors lead tours in Inner Harbor, teaching students terms, rigging & steering