Captains certified in marine life and harbor history sail to dolphin- or bird-sighting spots or sites of American Revolution and Civil War

Seventy-eight-foot 1860s replica schooner Freda B explores San Francisco Bay landmarks and wildlife, including seals and porpoises

50-minute lesson imparts basic sailing skills, and two-part intensive covers upwind sailing, boat safety, and tight-quarters handling

Narrated cruises search for blue whales, dolphins, and sea lions

Certified guides lead three-hour trips along scenic waterways while educating paddlers about safety and area wildlife

Certified guides lead kayakers down the serene and scenic Potomac River; all gear is provided

Learn the fundamentals of sailing a Sonar 23 on land and across the Long Island Sound, trimming the sails and navigating the boat

Airboats glide at speeds of up to 30 mph through waterways teeming with wildlife such as gators, hawks, and bald eagles

Certified captains helm 65-foot schooner, gliding passengers over Penobscot Bay on journeys ranging from historical tours to BYOB affairs

Under instructor supervision, guests man the sails of 19 ft. Rhodes sailboat or enjoy the ride in a two-hour cruise of Boston Harbor