Like the top of the world and the bottom of a stack of Tom Clancy novels, much of the ocean floor is unexplored. Dive into the unknown with today’s Groupon to Looe Key Reef Resort and Dive Center in Ramrod Key. Choose between the following options:

• For $44, you get a full-day snorkeling trip for two (an $88 value).
• For $84, you get a full-day diving trip for two (a $168 value). This option requires open-water certification for both divers.
  
  

Paired up with a Professional Association of Diving Instructors Divemaster, adventure-hungry divers and snorkelers board the Looe Key Reef Resort and Dive Center’s 45-foot catamaran boat to explore the sandy bottom abundant with sea creatures. Consisting of coral fingers and sand channels, the Looe Key Reef spans 5 square miles and carries a protected status thanks to its partially endangered sea dwellers. After a brief 5-mile boat ride, patrons can dive or snorkel up to 30 feet into the depths to witness angelfish, turtles, parrotfish, and nonbiting sharks go about their daily lives performing mundane chores and routine errands. Clear, 80-degree waters provide a comforting, almost-otherworldly experience as swimmers glide past ocean flora and extraterrestrial interlopers. Click here to check out pictures from past expeditions.