Deep-sea explorers just found ancient 'coral graveyards' off Hawai'i and Australia—reefs that died out when oceans warmed and rose thousands of years ago. The scary part? The same things are happening now, but way faster because of climate change. Scientists say these drowned reefs are a warning: if we don’t act, today’s living reefs could be next. Want to help? Cutting back on dirty energy and supporting reef protection makes a real difference! #Science #ClimateChange #CoralReefs