Red sky at night is a sailor’s delight, but red sky at morning means the ship's been steered inside a volcano. Discover further aquaformation with this Groupon.

$75 for Two-Hour Electric Boat Rental ($150 Value)

An easy-to-drive 18-foot Duffy Snug Harbor boat carries up to eight passengers across Alamitos Bay or Naples's canals. Amenities include waterproof speakers connected to an iPod docking station, a 70-quart insulated icebox, electrical outlets, and a dining table outfitted with linens. Patrons can upgrade to a larger boat, fitting up to 10 passengers, for an additional $20.

Bay Boat Rentals

Patrons of Bay Boat Rentals don the captain’s hat and man the wood-paneled dash of 18-foot and 21-foot Duffy boats. Professional mariners show renters how to steer and remind them not to pick up hitchhiking penguins before vessels set sail on the waters of Alamitos Bay or waltz along the canals of Naples. Waterproof speakers blast music from iPods plugged into docking stations, and insulated coolers keep beverages cold as passengers fold back awnings to bask in the sun or relax in the shade of the 18-foot boat's canvas surrey top. Bay Boat Rentals outfits its floating lounges with complimentary ice and picnic linens and can also provide platters of gourmet snacks for guests to nibble while gathering the courage to toss diamond-heavy necklaces into the waves.