Our Blue Planet: Defining Boundaries for a Thriving Ocean

Covering more than 70% of our planet’s surface, the ocean plays a vital role for life on Earth. Its vast waters are home to everything from microscopic plankton to the world’s largest mammals. Billions find their food and livelihoods along its coasts and high seas. Roughly half the

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An ocean world, ocean planet, water world, or water planet is a type of planet or natural satellite that contains a substantial amount of water in the form of oceans, as part of its hydrosphere, either beneath the surface, as subsurface oceans, or on the surface, potentially submerging all dry