What You'll Get
Choose from Four Options
- $299 for a two-hour boat-captain rental, valid Monday–Thursday ($1,000 value)
- $399 for a two-hour boat-captain rental, valid Friday–Sunday ($1,000 value)
- $499 for a four-hour boat-captain rental, valid Monday–Thursday ($2,000 value)
- $599 for a four-hour boat-captain rental, valid Friday–Sunday ($2,000 value)
Saltwater: How Oceans Get Their Flavor
Even the clearest ocean water contains complexities the eye can’t see. Uncover one of them with Groupon’s investigation of earth’s sodium-filled seas.
If you extracted all the salt from the ocean and spread it evenly across the surface of the planet, it would reach a height of 500 feet—44 feet higher than the world’s tallest roller coaster. All that salt arrived there from a few sources. For millions of years, rainwater has slowly eroded rocks on land, releasing salt ions into streams and rivers that feed into the ocean. Hydrothermal vents and volcanic activity from below also release salt into the sea, and constant surface evaporation lifts water up but leaves salt behind.
Salt isn’t the only mineral in our oceans. At least 72 chemical elements have been identified in seawater, and oceans aren’t the only places this elemental soup exists. In fact, the same sources that give oceans their salinity also operate in what we think of as freshwater rivers and lakes, but because of lower salt concentrations in “fresh” water, human senses don’t register the compounds. Why are oceans so much saltier? The answer is rather simple: they’re huge (creating a large surface area for evaporation to do its work) and they’re constantly being replenished with rocks and other matter carried in from the rivers, most of which drain from lakes and springs into the sea. Once they get there, rocks have all the time in the world to be worn down by the ocean’s waves, contemplate writing their memoirs, and release their salts.
On average, the ocean’s salt content is about 3.5% of its total weight. This varies by location, however. For example, the landlocked Dead Sea’s constant evaporation makes its salinity extremely high, whereas melting ice dilutes polar seas. And slowly but surely, with each passing year, the forces of nature are making all seas, like the act of a child comedian, just a little saltier.
The Fine Print
Promotional value expires 180 days after purchase. Amount paid never expires. Appointment required. Valid only within 25 miles of zip code 33143. Not valid for clients active within the past 12 month(s). Reservation required. Limit 1 per person. Valid only for option purchased. Voucher is up to 2 or 4 hours, any time after that is an additional $100/hour. Allowable boat capacity is specific to your boat regulations. Owner is responsible for fuel and/or bait. Captain will provide rods, reels and tackle if necessary. Subject to availability, call one week in advance to schedule. Must have your own boat. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.