Florida also has a history of “beach nourishment” projects in which sand (brought from inland) is spread onto beaches to replenish the sand lost to erosion. According to a database of 2,000 beach nourishment projects, 500 of them have spread 293 million cubic yards of sand at a price of $2.4 billion dollars.
Many of the Florida Keys' beaches are manmade, or are just a layer of sand over a sliver of limestone. The north is almost always cooler than south, something to remember in both summer and winter.
In the past, up to 90% of natural sand supply for California beaches came from rivers and streams. Water runoff from a natural watershed transports a mixture of sand, silt, and clay to the coast.
Barrier islands make up more than 700 miles of Florida's coastline. They are naturally formed by shifting sands that build upon an existing sandbar to eventually form an island. The sand that has accumulated above the water surface becomes the home for the drifting seeds of beach plants.
The sand is made from pure white quartz crystal, which came from the Appalachian Mountains at the end of the last Ice Age and was deposited into the Gulf of Mexico.
That's because the sand here is made up of 99 percent pure quartz, giving our beach not only its color, but its powdered sugar feel. The beaches of Siesta Key have quartz that originally came from the southern Appalachian Mountains via rivers to the Gulf of Mexico, washing up on the beach over time.
Whitehaven Beach, Whitsunday Island, AustraliaWhitehaven Beach is consistently ranked as the world's best beach, and with good reason: It's almost surreally beautiful. Besides its crystal clear waters, it's known for its white sand, consisting of 98% pure silica which gives it a bright white color.
Florida is home to thriving marine life such as sea turtles, corals, manatees, mangroves, dolphins, whales, sharks, sawfish, rays, spiny lobsters, crabs and countless species of fish.
An array of crustaceans – including sand crabs, roly polies (isopods), and beach hoppers (amphipods) – as well as beetles, blood worms and clams, all move up and down the beach according to the water level. This on-the-go lifestyle makes management of this ecosystem a unique challenge (see Best Practices).