The largest living structure on Earth is the Great Barrier Reef, which is located off the coast of Australia. It's a sprawling coral reef system that spans over 2,300 kilometers (1,400 miles) and is home to more than 1,500 species of fish, 411 species of hard corals, and a vast array of other marine life. The Great Barrier Reef is so vast that it can even be seen from space!
The largest living structure on Earth is the Great Barrier Reef, which is located off the coast of Australia. It's a sprawling coral reef system that spans over 2,300 kilometers (1,400 miles) and is home to more than 1,500 species of fish, 411 species of hard corals, and a vast array of other marine life. The Great Barrier Reef is so vast that it can even be seen from space!
https://oceanservice.noaa.gov/facts/gbrlargeststructure.html