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What kind of fish are in trouble?
The passenger pigeon went extinct in 1914
The passenger pigeon went extinct in 1914
 
Melanie Said
Most fish are in trouble because we're over fishing them. Look at the example of cod. Cod are the passenger pigeons of fish. Passenger pigeons used to fly overhead in flocks that were so huge they took days to pass. People killed them for sport, and suddenly they were extinct. None left. The same thing has happened to cod. They've practically disappeared, and we barely noticed it happening. Sharks, too. In the last 15 years, populations of many sharks have dropped by 75 percent.