Way Off facts · 🌊 The Ocean
How many square kilometres of the ocean floor have been mapped in high resolution?
104 million
km²
104,000,000 exactly, give or take
That's 28.7% of the seabed as of 2026 — we have better maps of Mars than of our own ocean floor. The Seabed 2030 project is racing to chart the rest.SOURCESeabed 2030 / IHO
Scale check: 104 million is roughly about the population of Japan.
Would you have guessed? You'll be way off.
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