Some claim that half-and-half is neither here nor there, when in truth it is both there and here all at once. Today's Groupon similarly merges the codependent worlds of land and sea: for $17, you get one seat aboard a Ride the Ducks amphibious tour of San Francisco, up to a $32 value. Hop on the wheeled boats for any tour leaving from Union Square, or for the first tour of the day leaving from Fisherman's Wharf, to catch sweeping views of famous city streets, city structures, and jealous glances from marooned pedestrians.

The confident, white paint job of a certified duckmobile takes to the water as easily as it careens along asphalt, providing an atypical transportation experience for swimmers and walkers alike. Knowledgeable tour captains introduce their passengers to the history and culture that surround such grounded sites as Ghirardelli Square, Chinatown, Union Square, and more. When dry land runs out, the hydro-karts dip into the San Francisco Bay for the maritime views of the Bay Bridge and McCovey Cove, famously named after first baseman and cove-lover, Willie McCovey.

Tours run every day through the end of October. Each one allows sightseers to experience the city from multiple vantage points and sea levels. It gives land-humans the opportunity to see why merpeople and motorized animals love their briny metropolis so much.

Reviews

Yelpers give Ride the Ducks four stars, and TripAdvisors give five owl eyes:

• What a blast!! Our captain, Duck Roger, was high energy and entertaining all the way - he had everyone singing and dancing (and blasting on our souvenir "quackers") the whole trip. – Kazza138, TripAdvisor
• I took my 75 yr. old Mom, my sister and my 9 yr. old son on this trip. We all had so much fun. The guide was educational and funny. – AM9California, TripAdvisor