Biologists estimate that water makes up 65% of the human body, 71% of the planet's surface, and 0% of the R & B group Earth, Wind & Fire. Conquer the planet’s most prevalent liquid with today’s Groupon: for $199, you get an Openwater Diver course at Dive Right In Scuba in Plainfield (up to a $399 value).

Dive Right In Scuba's expert diving instructors prime students to travel underwater avenues during a revolving schedule of classes and pool time. The aqueous path to open-water certification begins on dry land with required classroom sessions that participants complete online. Upon finishing the necessary bookwork, students venture into the pool for hands-on application of scuba skills, such as breathing while submerged and lifting the spirits of frowny clownfish. After divers pass pool tests, they head to Haigh Quarry to demonstrate newly honed skills amid fish, sunken boats, and discarded Billy Ocean cassettes. Pupils aged 10–15 who successfully earn their sea-legs receive certification to dive 40 feet below the water's surface, whereas pupils aged 16 and older can plunge 60 feet deep. To participate, students must provide their own gear, including a mask, fins, snorkel, and boots; however, Groupon users will receive 5% off equipment purchased from Dive Right In Scuba.