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Research by SFU39s Nick Dulvy says shark and ray populations are

Research by SFU39s Nick Dulvy says shark and ray populations are


New research finds that one quarter of the world's cartilaginous fish, namely sharks and rays, face extinction within the next few decades.

Great Hammerhead sharks, that only reproduce once every two years, are classified as

One Quarter of the World's Cartilaginous Fish, Namely Sharks and Rays, Face Imminent Extinction : Conscious Life News


Population Modeler & Spatial Planner to work on #GlobalSharkTrends to develop a dashboard of global shark and ray indicators to track conservation outcomes ...

Largetooth Sawfish (Pristis pristis) in an aquarium

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Giant Guitarfish

Nick Dulvy

Ray CC BY 2.0 Flickr

Norbert Wu/Minden/NGC

Effective conservation efforts in the Arabian Sea could help ensure the survival of threatened species,

Global manta & devil ray conservation

The Guy Harvey Research Institute and the Save Our Seas Foundation are also using genetic approaches

Nicholas Dulvy and Colin Simpfendorfer


Harvesting Sharks Could Be Key to Saving Them

Green sawfish (Pristis zijsron) swimming at The Deep. Photo credit: The Deep


Figure 6B from Dulvy et al 2014

Shark and Ray specialists at IUCN regional shark assessment workshop in Abu Dhabi

Oceans in imminent danger of losing a quarter of all sharks and stingrays | IFLScience

Rhinobatos rhinobatos


Half of Arabian Sea sharks 'at risk of extinction'

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From Simpfendorfer and Dulvy 2017 Top panel: Location of sustainable and managed (green circles) and sustainable but not managed (yellow circles) shark, ray ...

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Nicholas Dulvy, Colin Simpfendorfer and Michelle Heupel

... UAE), Dave Ebert (Pacific Shark Research Center, CA, USA) and Riley Pollom (SFU). This first workshop follows the Arabian Seas workshop last year.

Researchers need to learn more about angel sharks (Credit: Michael Sealey)

I study the connection between life histories of fishes and their vulnerability to overfishing. I have been interested in how this plays out in sex-changing ...

Research sites (d s) on the northwest coast of British Columbia

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Distribution maps for manta and devil ray species.

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This month's reward is the barb from a Pacific Cownose Ray, Rhinoptera steindachneri. This particular specimen is a part of the Texas A&M University ...

Lindsay Davidson (ldavidso'at'sfu.ca), PhD student - Shark conservation priorities and management

Sharks at risk of extinction from overfishing, say scientists

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Blue sharks "

Figure 3 (a) Total reported capture production (mt) for the Arabian Seas

a, Stacked plot of total ocean area designated with any spatial protection, excluding those exclusively for sharks (all MPAs, light blue) and those ...

Manta rays have low intrinsic rates of population increase due to their slow growth to a

For Sharks, Even Catch and Release Can Kill

Shark-fishing legislation varies from country to country. Some countries permit shark fishing but ban finning at sea, some allow finning, ...

Comparison of maximum intrinsic rate of population increase (rmax) for 96 elasmobranch species arranged by (a) growth coefficient k and (b) maximum size.

David Wachenfeld

Figure 2: Population declines since 1970's of 8 shark species showing the sad state of

#SharkConservationFund #GlobalSharkTrends project requires generation length for @IUCNRedList Assessments which is calculated from age; this is a vital new ...

Rays are often an incidental catch in trawl fisheries. This photograph shows blue spot lagoon rays were captured in a trawl fishery in Sri Lanka.


Dusky shark hunting

article image Stingray populations in decline

30 porbeagle sharks tagged in DFO/OTN population survey

Endangered Sawfish: IUCN Strategy Released as Global Protection Proposed

Catching devils on camera

Taylor Chapple and wildlife filmmaker and shark enthusiast Andy Casagrande are on a mission that could change the very basis of shark studies.

For the love of sharks


Photo: Forrest Samuels via USFWS/Flickr

deep ocean sharks | Friday Deep-sea Picture: Basking Shark | Deep Sea News

Blue sharks are caught in the Mediterranean for their fins.

An x-ray image of the vertebral column of a Carolina hammerhead, courtesy Dr

Life histories, demography and IUCN Red List status of oceanic pelagic sharks

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Silky sharks swimming

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Elephant shark genome decoded


Population structure and residency of whale sharks Rhincodon typus at Utila, Bay Islands, Honduras

Largetooth sawfish

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2 Trends in incidence of four skate and four shark species in the southern

Giants of Peru

Shark Specialists Prioritize Recovery of World's Largest, Most Threatened Rays

Basking shark. Don't tell me a man couldn't fit inside the belly of a "fish"

RI Biodiversity, Animal Health & Comparative Medicine, Graham Kerr Building,

Overview of study area. The shaded areas represent the main spawning locations


Photo: CC Image courtesy of Danel Solabarrieta on Flickr.

Figure 1

Conceptual population structure model of scalloped hammerhead sharks in Australasia. TS indicates

a, The proportion of fish stocks overfished in each ocean basin (FAO areas, violet) combined with the proportion of marine shark and ray (blue shading in ...

SHARK WEEK: 14 sharks, including the Great White, swim in B.C. waters and more are coming

10 Largest Sea Creatures: Giant Manta Ray