World’s largest plant is a vast seagrass meadow in Australia

The Posidonia australis seagrass meadow in Australia’s Shark Bay (Rachel Austin/The University Of Western Australia via AP)

Scientists have discovered the world’s largest plant off the Australia coast — a seagrass meadow that has grown by repeatedly cloning itself.

Genetic analysis has revealed that the underwater fields of waving green seagrass are a single organism covering 70 square miles through making copies of itself over 4,500 years.