‘Biggest Plant on Earth’ discovered off Australia’s western coast

Scientists have discovered what they believe to be the largest plant on Earth in Shark Bay off the west coast of Australia. The plant (Posidonia australis) spans nearly 180 kilometres, originating from a single seed about 4,500 years ago. The plant now forms a vast underground meadow which a huge array of marine animals call home, including turtles, dolphins, crabs and fish.