Fishy economics: Exploitation of the deep seas

As the crustaceans became harder to find, canned lobster ceased to be profitable. Live lobsters, by contrast, grew in status as they became dearer. A meal that cost $4 (in today's money) in the 1870s cost $30 or more a century later. What was once a manure substitute is now a prized delicacy. What the lowliest servant once refused, the swankiest restaurateur now offers with pride. Mr Jones's menus may reveal something about the historical fate of fish, crustaceans and molluscs. But there is no accounting for that peculiar land-based mammal that eats them.

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