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Sea turtles mark places where you can find signs of the sea around you. We've chosen sea turtles to mark the sites because, like sea turtles, we too need both the land and sea to live, although the ways may not be as obvious. Click on a sea turtle to see each site. You can then comment on the site, or add to the map by submitting your own signs of the sea from places you know. This first map is of North America, but you can submit signs of the sea from anywhere in the world.Recent Sites
Fate of Migrating Red Knots Tied to Horseshoe Crabs
Will tiny red knots breeding in arctic Canada’s wind-swept tundra become extinct? That depends on horseshoe crabs living in Delaware Bay, 4300 miles away.
See MoreHorseshoe Crabs May Have Saved Your Life
If you’ve ever received a flu shot or intravenous medication, or if you have a pacemaker, a horseshoe crab may have saved your life.
See MoreThe Bonneville Speedway – on Sea Salt!
Year after year, automobile speed records are set, and broken, on one of the planet’s fastest race tracks – Utah’s Bonneville Salt Flats. What does this desert have to do with the sea?
See MoreInland Canada Sheds New Light on Old Crab
Horseshoe crabs have been around a long time. Scientists thought they knew how long, but fossils recently found in Manitoba proved them wrong - by about 100 million years.
See MoreThe Sea’s First Tides – in Utah
High in the mountains, far from the sea, a record of earth’s early tides reveals that one billion years ago, a day on earth was much shorter.
See MoreWater from the Gulf of Mexico in the Great Lakes?
North America’s Great Lakes, containing six quadrillion gallons of water, constitute one of the largest surface reservoirs of fresh water on earth. What does all this fresh water have to do with the ocean?
See MoreUtah’s Spiral Jetty: Vanishing and Reappearing
When water levels in Utah’s Great Salt Lake rise, Robert Smithson’s famous earth sculpture Spiral Jetty disappears, sometimes for as long as 20 years.
See MorePaddle-to-the-Sea
A young boy living deep in the Canadian wilderness, far from the smell of salt spray and the reach of the tides, nonetheless knows his home is connected to the sea. How?
See MoreCoral on a Freshwater Beach
Waves in the Mountains
Each of Maya Lin’s and Andy Goldsworthy’s enormous installations at the Storm King Art Center - hers a grass wavefield on an 11-acre site, his a 2,278-foot-long stone wall, is of the sea; a sea that has long disappeared.
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