QUICK FACTS
Name: "Immortal" seagrass meadow
Location: Shark Bay, Western Australia
Coordinates: -25.8829486505056, 113.90591540490992
Why it's incredible: The giant meadow formed from a single seedling.
The crystal-clear waters of Shark Bay are home to the world's largest plant: a seagrass meadow spanning 77 square miles (200 square kilometers) and stretching 112 miles (180 kilometers) from end to end. The shoots that make up the massive meadow all originate from one stem, which researchers estimate is at least 4,500 years old.
