Ken Nedimyer, founder of Reef Renewal USA, has been working for two decades to restore coral reefs, which face existential threats from climate change and pollution. The Great Barrier Reef, a UNESCO World Heritage site, has reached temperatures not seen in 400 years, leading to mass coral bleaching and potential ecosystem collapse unless emissions are curtailed. This crisis is mirrored in New Zealand, where locals are fighting against a mining company that threatens marine biodiversity in the South Taranaki bight. Meanwhile, initiatives like the upcoming Reef & Beach Cleanup aim to engage communities in preserving coastal ecosystems by removing trash and promoting awareness. Innovations in data analysis by researchers like Associate Professor Francis Hui are also being applied to better understand and protect the Great Barrier Reef's complex ecosystems. Collectively, these efforts highlight the urgent need for action to safeguard vital marine environments.