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

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.

Now, the largest coral ever recorded has been discovered, scientists said Thursday, and it’s so big it can be seen from space. It was found by a National Geographic team conducting an expedition in the Solomon Islands in October to study ocean health.