On an expedition to the Solomon Islands, divers affiliated with National Geographic have found the world’s largest single coral colony ever recorded. It’s longer than the largest blue whale. At 34 meters (111 feet) in length, and with a width of 32 (105) meters, it could sit corner to corner across 5 tennis courts.

Researchers have made a gargantuan discovery that’s as large as two basketball courts, visible from space, at least 300 years old and brimming with marine life: It’s the world’s largest coral, found in the southwest Pacific Ocean.

It’s more than 100 feet long, around 300 years old, made of nearly 1 billion little polyps and visible from space