Extinction: 'Time is running out' to save sharks and rays - BBC
2021年1月27日 · The scalloped hammerhead is critically endangered. Scientists say sharks and rays are disappearing from the world's oceans at an "alarming" rate. The number of sharks found in the open oceans...
More Than a Third of Shark Species Are Now Threatened With Extinction
2021年9月8日 · More than one-third of the world's shark and ray species are now facing the threat of extinction, the International Union for the Conservation of Nature (IUCN) has declared in the latest update...
Shark | Species | WWF - World Wildlife Fund
Seventeen out of the 39 pelagic shark species are threatened with extinction. Threats to reef sharks. As with most shark species, overfishing is by far the biggest threat to most larger reef sharks, while damage to reef and other key habitats is also having an impact.
A third of sharks are threatened with extinction. Here’s what ... - CNN
2024年6月28日 · Fisheries kill about 100 million sharks a year, according to the non-profit Save Our Seas. Many sharks end up as bycatch when long lines and gill nets unintentionally catch them.
Most high-seas shark species now threatened with extinction
2021年1月27日 · Shark populations in the high seas have fallen by 71% since 1970, researchers have found. The main cause is overfishing, which has put three-quarters of these species at risk of extinction.
Shark and ray populations have dropped 70% and are nearing ... - CNN
2021年1月28日 · CNN — Some species of sharks and rays could disappear from our seas altogether after a sharp drop in their numbers due to overfishing in the past 50 years. A study published Wednesday in the...
Overfishing puts more than one-third of all sharks, rays, and chimaeras ...
2021年9月8日 · More than one-third of all sharks, rays, and chimaeras (fish related to sharks and rays) are now at risk of extinction because of overfishing, according to a new study re-assessing their IUCN Red List of Threatened Species extinction risk status.
Half a century of global decline in oceanic sharks and rays
2021年1月27日 · In total, half (16 out of 31) of oceanic shark species are now critically endangered (n = 3; ≥80% population reduction over three generations) or endangered (n = 13; 50–79% population...
Extinction: 'Time is running out' to save sharks and rays
2021年1月27日 · Scientists say sharks and rays are disappearing from the world's oceans at an "alarming" rate. The number of sharks found in the open oceans has plunged by 71% over half a century, mainly due...
A global study reveals pathways to save threatened sharks, …
2024年1月11日 · Sharks have persisted as powerful ocean predators for more than 400 million years. They survived five mass extinctions, diversifying into an amazing variety of forms and lifestyles. But this ancient lineage is now among the world's most threatened species groups due to overexploitation in poorly regulated fisheries and the proliferation of ...