Generally, when you encounter grass, or indeed sea grass, it appears to be many millions of individual plants all growing together.
![](https://seeanimalswild.com/wp-content/uploads/2022/07/vast-sea-grass.jpg)
Scientists discovered one single seagrass plant which has spread over 200 square km, and is thought to be 4500 years old.
This huge single plant now provides a place to live and feed for vast numbers of crabs, fish, turtles, dolphins and dugongs.