Though dry land has its conveniences, mankind cannot help but look wistfully back to its aquatic origins and remember that gills were a great place to store extra pats of butter. Embrace your watery heritage with today’s Groupon: for $40, you get a dry snorkel (a $60 value) and four hours of open pool time (a $60 value) at Bluewater Scuba in Franklin (a $120 total value).

Bluewater Scuba plunges aspiring deep-sea gazers into wet worlds with first-class equipment and scuba skills acquired during practice sessions in shallow water. Swimmers adorn themselves for submerged exploration with their new Phoenix dry snorkel, an underwater breathing device with a floating lever that seals shut to prevent the inflow of water. Bluewater Scuba’s expansive indoor heated pool introduces snorkelers to weightless wandering without the risk of getting lost in the underwater world’s bountiful bubbles, schools of fish, and clam demolition derbies. Open-water pool sessions are scheduled on weekends throughout the summer and help new snorkelers learn the ins and outs of breathing in and out in a supportive group environment.