Importance of Global Fisheries
Marine sources provide about 20% of the animal protein eaten by humans.
Another 5% is provided indirectly via livestock fed with fish.
60% of fish consumption is by the developing world.
In Asia, about 1 billion people rely on fish as their primary source of protein.
Economically important marine organisms
These are bottom-living fish (cod, flatfish, pollock)
Inhabit the water column (herring, mackerel, anchovy, and tuna. Demersal fishes and Pelagic fishes combined make up the majority of the fish catch–72 million tons per year.
Both bottom-dwelling species (crabs and lobsters) and swimming invertebrates (krill, shrimp). 4 million tons harvested each year.
Molluscs and Cephalopods.
Squid, cuttlefish, and octopus. More cephalopod stocks are harvested by the Japanese than by any other nation. 2.5 million tons harvested each year.
Heavily exploited for oil and meat, make a relatively small portion of the global catch.
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