[singularity2001]

yet I read that every meter of ocean floor was physically 'plowed' multiple times over by fishers, on average.

[cbr]

Where did you read that? It can't possibly be right: the Pacific alone is 160M km^2.

[zaptheimpaler]

Maybe they mean the area of ocean floor plowed > area of ocean, but the same parts of the ocean are being plowed over and over again by fishers. Most of the ocean is not being used for fishing.