A zoological study published in the British journal Nature on the 28th pointed out that some species in the ocean are facing a "population collapse" crisis - since 1970, the number of marine plate gills (that is, well-known sharks, rays, rays, stingrays) in the world has decreased by 71%, and more than 3/4 of these marine species are on the verge of extinction; while another study published at the same time pointed out the "climate crisis" of the ocean: the global sea surface temperature has been rising for the past 12,000 years. The simon fraser university team in Canada estimated the relative abundance of 18 marine plate gill species from 1970 to 2018, assessing the extinction risk of all 31 marine plate gill species. They found that from 1970 to 2018, global marine plate gill abundance declined by 71.1 percent. Of these 31 species, 24 are on the verge of extinction, and three shark species (marine whitetip shark, Luxe hammerhead shark, grooveless hammerhead shark) have been particularly reduced and are now classified as critically endangered – the highest level of threat on the IUCN list. (Science and Technology Daily; LX)
Source: Daily Economic News