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When it comes to the regions below the surface of the sea, the comparison with the moon, which is now said to be better known than the lightless abysses of the oceans, is often tried. In a way, this is actually true: While our earth drabant is already quite photographically documented, the deep sea is comparatively little, which is over 80 percent of the world’s oceans. In a recent study, researchers have now quantified how low the knowledge of man about the floors of the sea actually is.
