One good reason to eat less fish is because of Industrialized fishing methods. There are 1.4 billion hooks deployed annually on long lines (on each of which is a chunk of fish, squid, or dolphin flesh used as bait). A single fleet of boats have up to 1,200 nets, each one thirty miles in length used to catch one species. A single vessel can haul in 50 tons of sea animals in a few minutes. It's not a very sustainable formula.
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