Beneath the rolling surface of the world’s oceans lies a vast, living engine that helps regulate Earth’s climate. Oceans absorb nearly a quarter of the carbon dioxide released into the atmosphere, acting as one of the planet’s most powerful carbon sinks. From drifting phytoplankton to sprawling coral cities like the Great Barrier Reef, marine ecosystems capture carbon, circulate nutrients, and sustain extraordinary biodiversity. Even the deep waters of the Pacific Ocean store immense amounts of carbon for centuries, quietly buffering the impacts of global warming.
Coral reefs, mangroves, and seagrass meadows—often called “blue carbon” ecosystems—are climate champions. They trap carbon in sediments, shield coastlines from storms, and provide habitat for countless species. Yet rising ocean temperatures, acidification, and pollution threaten these delicate systems, weakening their ability to store carbon and support life.
In this section of Climate Streets, dive into the science of blue carbon, explore reef resilience, and uncover how protecting marine ecosystems strengthens climate solutions worldwide. The ocean’s story is one of power, fragility, and possibility—where climate action begins below the waves.
Oceans, Reefs & Marine Life
