Humans are faced with losing more than one species of fish that represent a vital source of food, unless overfishing and polluting the waters comes to an end, a new research suggests.
Mackerel and tuna have suffered the most over the past 40 years. According to the Zoological Society of London and the World Wide Fund for Nature (WWF), between 1940 and 2013 there was a decrease of 47% in some species of fish.
Louise Heaps, a chief adviser on all things marine at the World Wide Fund for Nature in The United Kingdom, warned that by ruining the ecology of the oceans, we are essentially wiping out numerous species of fish that represent vital food sources.
The bluefin tuna (Thunnus thynnus) is now on the verge of extinction and, if this wasn’t bad enough, its close relatives, the albacore (Thunnus alalunga) and the yellowtail tuna (Thunnus albacares) and constantly decreasing in number.
There are other sea creature that are facing serious dangers. For example the population of leatherback turtles has collapsed, as well as the the sea cucumber’s population, a very expensive food in East Asia, whose number has dropped about 94 percent in the Red Sea and almost 99 percent is the Galapagos.
“I am terrified about acidification. […] We were taught in the 1980 that the solution to pollution is dilution, but that suggests the oceans have an infinite capacity to absorb our pollution. That is not true, and we have reached the capacity now,” said Heaps.
It seems as though overfishing is not the only reason why so many species of fish drop in number. Because of pollution fish are getting injured by consuming plastic leftovers and their natural habitat is slowly disappearing.
Scientists predict that by 2050 coral reefs from all around the world will be lost, if people do nothing to change their bad habits.
Overfishing is the most serious in the Pacific area, where Japanese, Korean and Chinese people have some of the biggest fleets in the world. Chinese fishermen often use the finning technique on sharks, which means that they cut the fins off and then throw the shark back into the water. A quarter of shark species will die out in less than ten years if nothing is done to prevent this from happening.
Only the fish that are approved by the Marine Stewardship Council should be consumed by people, added Heaps.
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