Pollution, over-fishing, climate change driving many shark species to brink of extinction
Up to 40 percent of the sharks and ray fishes in the world are on the verge of extinction. The reason for this is climate change, over-fishing. Research on fishes for 8 years has revealed that the risk of their extinction in 2014 was 24 percent, which has now nearly doubled.
Researchers say, climate change is increasing the problem for such fish. This not only reduces the environment for their desired habitat but also increases the sea temperature. This claim has been made in the research report of international scientists.
According to the research report, in 2014, out of 1041, 181 fish were in danger of extinction, which has now increased to 391. One of the reasons for their declining numbers is pollution. Pollution acts to increase stress for fish like sharks and rays. Which is having a bad effect on such fishes up to 6.9 percent.
Researchers say that with increasing climate temperature, the risk of extinction of these fish species increases more. Especially in the seas of north and west-central India and in the north-west Pacific Ocean. Three-quarters of the world’s species are found in these areas, which are threatened.
3 species of fish not seen for 85 years
For the last 85 years, there are three species of fish that have not been seen. These include the Lost Shark, Java Stingaree and Red Sea Torpedo. Java Stingaree since 1868, Red Sea Torpedo from 1898 and Lost Shark since 1934.
Children of fish born prematurely and they also have weakness
Another research on climate change and fishes has been done by scientists from Australia. Research published in the journal Nature Scientific Reports says, as the sea temperature is increasing, it is having an effect on the organisms living here. Due to this change, the babies of shark fish are being born prematurely as well as nutritional deficiency has also been recorded in them. As a result, their survival is becoming more and more difficult. This is also affecting their size, which has already reduced.
