The International Union for Conservation of Nature (IUCN) has released a report, Global Status of Sharks, Rays and Chimaeras, that highlights new knowledge compiled by 353 experts from 115 countries and stresses the urgent need to address overfishing and bycatch in all countries.

​A recent assessment using the IUCN Red List of Threatened Species indicated that more than one-third of sharks, rays, and chimaeras are threatened with extinction.  

«A new analysis published today in the journal Science finds that one-in-seven deepwater sharks and rays are threatened with extinction according to the International Union for Conservation of Nature (IUCN) Red List of Threatened Species criteria. A team of experts from around the world note that the biggest threat to this group of deepwater megafauna is overfishing, specifically being captured incidentally as bycatch of fisheries targeting commercially important species. ​»

«​Significant progress was made towards conserving sharks and rays at the recently concluded 14th Conference of the Parties of the Convention on the Conservation of Migratory Species of Wild Animals (CMS). A wide range of issues related to sharks and rays were discussed, including ecological connectivity, bycatch, and deep sea mineral exploitation activities. Major conservation success stories include listing several new species of sharks and rays on the CMS Appendices, adopting a Single Species Action Plan for Angelshark, encouraging the use of Important Shark and Ray Areas in marine spatial planning, supporting Concerted Actions for priority species, and taking action to ensure effective implementation of CMS requirements for the threatened Oceanic Whitetip Shark.»

The Maugean Skate, one of the world’s most threatened fish, has less than a decade before extinction unless authorities act soon. ​

The IUCN Species Survival Commission Shark Specialist Group (SSG) has released a compendium of Important Shark and Ray Area from the Mediterranean and Black Seas (view document here). These areas range in size from just 0.09 square kilometers to 219,000 square kilometers, encompassing shallow coastal waters to habitats more than 2,000 meters deep. They are important for species including the Critically Endangered Blackchin Guitarfish (Glaucostegus cemiculus) and the Endangered Rough Skate (Raja radula), as well as commonly fished species like the Common Smoothhound (Mustelus mustelus). These habitats are used by these species as mating or aggregation sites, nursery areas, feeding locations, or migratory pathways. More than 50% of shark and ray species in the Mediterranean Sea are considered threatened with extinction, and these newly identified areas should be considered for protection.  

​Thessaloniki, Greece. May 12, 2023. This week marks the first time a team of global and regional experts have gathered to map critical habitats for sharks, rays, and chimaeras across the Mediterranean and Black Seas. The five-day workshop, organized by the IUCN Species Survival Commission Shark Specialist Group and hosted by iSea, allowed over 180 experts to contribute online and in person to the process of delineating Important Shark and Ray Areas (ISRA) in this region.

​«Initiatives have been developed for specific taxa, such as birds (Important Bird and Biodiversity Areas) and marine mammals (Important Marine Mammal Areas) and for biodiversity more generally (Key Biodiversity Areas and Ecological or Biologically Significant Marine Areas). These approaches are now well accepted and utilized in spatial and conservation planning. Until recently, such an approach had yet to focus on sharks and their relatives, the rays and chimaeras (hereafter collectively referred to as sharks), one of the most threatened faunal lineages (37% of species are categorized as threatened with extinction on the IUCN Red List).» 

The Important Shark and Ray Areas (ISRA) project has released the first electronic atlas of priority areas for sharks, rays, and chimaeras (also known as ‘ghost sharks’). Sharks and rays are some of the most threatened vertebrates on Earth, and are in desperate need of new and improved management. The ISRA project uses the best available science to identify regions across global waters most critical for the long term survival of sharks, rays, and chimaeras. These include places where species of concern mate, reproduce, feed, rest, or aggregate as well as key stopovers during a migration.

​Vancouver, Canada. February 7, 2023. The Important Shark and Ray Areas (ISRA) project has released the first electronic atlas of priority areas for sharks, rays, and chimaeras (also known as ‘ghost sharks’). Sharks and rays are some of the most threatened vertebrates on Earth, and are in desperate need of new and improved management. The ISRA project uses the best available science to identify regions across global waters most critical for the long term survival of sharks, rays, and chimaeras. These include places where species of concern mate, reproduce, feed, rest, or aggregate as well as key stopovers during a migration.

A new analysis published today in the journal Nature documents an alarming, ongoing, global decline of oceanic shark and ray populations over the past 50 years, primarily due to overfishing. A team of experts from around the world assessed 31 species and found a 71% decline in global abundance since 1970, a period that saw a doubling of fishing pressure and a tripling of shark and ray catches. Three-quarters (77%) of oceanic shark and ray species now qualify as threatened with extinction under the Red List criteria of the International Union for Conservation of Nature (IUCN).

To shine light on and conserve rare shark, ray, and chimaera species (chondrichthyans), SFU researchers have developed a fully-resolved family tree and ranked every species according to the unique evolutionary history they account for.

Results from the 2017 IUCN Regional Red List assessment of 153 species of chondrichthyan fishes (sharks, rays, and chimaeras) indicate the Arabian Sea and adjacent waters are home to some of the most threatened chondrichthyan populations in the world.

Conventional wisdom holds that sharks can't be harvested in a sustainable manner because they are long-lived animals. It takes time for them to reproduce and grow in numbers. But, researchers reporting in Current Biology on February 6 have evidence to suggest that sustainable shark fishing can be done with careful, science-based management. In fact, they say, an outright shark ban won't work. The only way to protect sharks and the food security of people who depend on them is by managing shark fisheries sustainably.