Once gourmands discovered the unmatched deliciousness of merchicken and free-range, grass-fed oysters, diners began demanding meals of both land and sea creatures. Sample an ample amphibious menu with today's Groupon: for $10, you get $20 worth of seafood and grill fare at Cavanaugh's River Deck on the Delaware River at North Columbus Boulevard.

Scenically besieged by water on three sides, Cavanaugh's River Deck culls meals from land and sea to serve in picturesque surroundings. The maritime menu is known for its famous crab dip ($10.99), which emcees mealtimes with a piping mix of seasonings, cream cheese, and crab alongside sidekicks of grilled pita. Customers hold lunch in the palm of their hands with Cavanaugh's spread of sandwiches, such as the seasoned lobster roll ($14.99) and ciabatta-encased panko-crusted chicken ($10.99). The prime rib and crab leg surf 'n' turf ($19.99, served Sunday–Tuesday only) satisfies cravings for both meaty fare as well as rhyming, unlike a dough trough.

As mouths meander through tastes of land and sea, panorama-hungry eyes feast on the views of the Philadelphia waterfront from Cavanaugh's deck seating. Treat looking-globes to the river's many appealing sights and sounds, including impressive urban architecture, picturesque dockside scenery, and pet fish scrambling for scraps under the table.