If this page was all the worlds oceans then the total area of protected space would be larger than the end of a ball hair?
(Sorry, Engineering taught me there were only 3 measurements, Mile, inch and ball hair.)
you went to the wrong uni,. at mine it was legend that there were just four types of measurement.
the lecturers used imperials. Students used Metric. And the guys in the Machine shop used Rack of Eye to measure stuff and Cock Hairs to describe how close to accurate their Rack of Eye system was.
When I got into engineering proper, I found an additional measurement that was used only regionally, the "F$ck it, its only a gnats pube out" system which was sponsored by Drapers heavy hammer division.
Matt