Effect+of+overfishing

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 * 1) The above shows that over 25% of all the world's fish stocks are either over exploited or depleted.
 * 2) Another 52% is fully exploited, these are in imminent danger of over exploitation. Thus a total of almost 80% of the world's fisheries are fully- to over-exploited, depleted, or in a state of collapse.
 * 3) Worldwide about 90% of the stocks of large predatory fish stocks are already gone.
 * 4) In the real world all this comes down to two serious problems:
 * We are losing species as well as entire ecosystems. As a result the overall ecological unity of our oceans are under stress and at risk of collapse.
 * We are in risk of losing a valuable food source many depend upon for social, economical or dietary reasons, as the food chain gets destroyed!

Overfishing of a specific fish species does not only damage the population of that fish alone but others as well. This can have a serious effect on the food chain. An example: "Herring is a vital prey species for the cod. Therefore, when herring are overfished the cod population suffers as well. The sandeel is the main food for seabirds such as the puffin. Sandeels have been fished around the Shetland Islands since the mid-1970s, though catches were declining throughout the 1980s. At the same time, the colonies of seabirds nesting around Shetland declined, with some even falling to breed for several years."