Forty-foot river boat ferries partiers to bars or takes families to an island to search for treasure

Tour boats stocked with refreshments cruise Potomac waters as narrator points out Roosevelt Island, Curtis-Lee Mansion & other landmarks

Renovated WWII amphibious cruiser ushers passengers down Boston city streets & across waterways during award-winning tours

Air-conditioned, two-level boat glides across Saguaro Lake as tour guides share info about area geology & exotic flora & fauna

Hydra-Terra vehicles shuttle sightseers around downtown and across Lake Austin as guides tell historical tales and discuss landmarks

Instructors take students out onto the waters of Havre de Grace harbor for a hands-on introductory sailing lesson

For two hours, guests explore Jupiter Sound’s turquoise waters standing atop paddleboards, or tucked into kayaks

Boats ride up alongside playful dolphins and graceful whales for up-close viewing, and a guide points out marine life and historical sites

Three people fit on each jet ski, which the staff will teach them to operate; they then cruise around Estero Island, looking for dolphins

135-foot schooner tours local landmarks along the Elizabeth River and Hampton Roads Harbor; live music during sunset tours