Even though water covers most of the earth's surface, humans spend most of their lives on land and a small portion in the air while they’re sleeping. Float on with this Groupon.

Choose from Three Options

• $52 for a two-hour sunset dinner cruise aboard the Spirit of Boston, valid on Sunday (up to an $87.63 value)
• $65 for a three-hour dinner cruise aboard the Spirit of Boston, valid Monday–Friday (up to a $108.60 value)
$73 for a three-hour dinner cruise aboard the Spirit of Boston, valid on Saturday (up to a $121.70 value)

During each cruise, guests take in views of Boston's historical skyline from an expansive open-air deck before being escorted to a table in the ship's dining room. Surrounded by windows for continually unobstructed views, guests dive into a freshly prepared buffet menu of upscale cuisine such as tilapia fillet with lobster cream; Alaskan salmon mediterranean sautéed with citrus, white wine, and dill; and vanilla-bean cheesecake for dessert. Throughout the feast, Spirit of Boston's music serenade guests with melodic tunes and engaging entertainment. Later, a live DJ encourages guests to take to the dance floor, pumping out popular hits as the dining room morphs into an elegant club. Boarding begins at 6:30 p.m. Monday–Saturday, and at 5:30 p.m. Sunday.

Though this merchant sometimes offers a discounted price online, this Groupon is still the best deal available.