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

• $25 for a two-hour harbor cruise for 1 (up to a $50 value)
• $48 for a two-hour harbor cruise for 2 (up to a $100 value)
$499 for a two-hour private charter for up to 40 (a $1,000 value)

Tour and learn about New Haven Harbor on one of four public-sail cruises: the Harbor Science Sail, the Family Pirate Sail, the Sunset Sail, or the Harbor Tour. Choose the Harbor Science Sail to see the crew perform a fishing trawl and explain their catch, then learn to tie boating knots and help raise the sails using 19th-century methods. Don an optional eye patch and pantaloons for the Family Pirate Sail, where passengers play games and take home treasure bags. The Sunset Sail and Harbor Tour provide more laid-back options for cruisers looking to sip home-brought beverages against a breathtaking shoreline backdrop. The profits from all public sails support the Quinnipiack's educational and environmental programs.

Alternatively, up to 40 people can bring their own drinks for a relaxing private charter. The ample deck space gives partygoers plenty of room to mingle and perform their best dolphin calls. See a list of FAQs.