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The IHO - Measuring, Mapping & Understanding the Ocean - World Oceans Day 2025
The ocean is central to life on Earth.
It provides food, jobs, and energy.
Yet to this day we only have a map for 26.1% of the ocean. Some maps still rely on data collected as far back as the 18th century!
Watch this video to learn how the International Hydrographic Organization works with its Member States to help measure, map, and understand the ocean.
