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Giant clam shells hold 200-year climate record of Great Barrier Reef
Original: One giant clam contains a month‑by‑month diary of the Great Barrier Reef's climate 200 years ago
Researchers have found that a single giant clam from the Great Barrier Reef preserves a month-by-month record of ocean conditions stretching back roughly 200 years. By analysing growth layers in the shell, scientists can reconstruct historical sea temperatures and environmental changes, offering a detailed natural archive of the reef's climate long before modern instrumental records began.
Why now: The finding offers a rare long-term climate record for the Great Barrier Reef at a time of intense concern over reef health and warming seas.
Great Barrier Reefgiant clamclimate scientists
Evidence
- One giant clam contains a month‑by‑month diary of the Great Barrier Reef's climate 200 years ago · Phys.org
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