Genetic sampling in Shark Bay, Western Australia, showed that a meadow of ribbon weed (Posidonia australis) spanning about 180 km is a single clonal plant covering roughly 200 km2, the largest known plant on Earth by extent. The study by Jane Edgeloe and colleagues was published in Proceedings of the Royal Society B in 2022; the clone is estimated to be about 4,500 years old.
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Genetic sampling in Shark Bay, Western Australia, showed that a meadow of ribbon weed (Posidonia australis) spanning about 180 km is a single clonal plant covering roughly 200 km2, the largest known plant on Earth by extent. The study by Jane Edgeloe and colleagues was published in Proceedings of the Royal Society B in 2022; the clone is estimated to be about 4,500 years old.
The largest linear extent of a single genetic individual (clone) of any marine plant.
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1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-LARGEST-SEAGRASS-CLONE-SHARK-BAY-POSIDONIA
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Limits Registry. LR-LARGEST-SEAGRASS-CLONE-SHARK-BAY-POSIDONIA. Largest known plant clone in the sea. 2026.