The International Union for Conservation of Nature (IUCN) has released a global strategy to prevent extinction and promote recovery of sawfishes. The strategy by the IUCN’s Shark Specialist Group was launched at the Sharks International conference in South Africa and coincides with announcements that two West Africa countries – Guinea and Guinea Bissau – are […]
Divers monitor reef shark numbers as accurately, and cheaper, than automated tracking tools, a study suggests. Shark populations are thought to be declining globally, but a quick search of the IUCN’s Red List shows that for 67% of shark species the population trend is unknown. It’s difficult to monitor shark numbers due in part to […]
Following another fatal shark attack in Australia, new research finds little support for the shark cull. A survey of 583 aquarium visitors asked people how they thought the Government should respond to shark bites and found that despite the public’s fears, 87 per cent favoured non-lethal responses. Only four per cent of those surveyed supported […]
A quarter of sharks and rays are threatened with extinction. Large, shallow-water species are at most risk. The Indo-Pacific, particularly the Gulf of Thailand, and the Mediterranean Sea are the two ‘hotspots’ where the depletion of sharks and rays is most dramatic. The Red Sea is also home to a relatively high number of threatened sharks and rays.
Shark feeding dives are increasing, yet are controversial. Shark tourism has great economic benefits, and can help shark conservation. What are the drawbacks?
Great white sharks may be among the longest-lived fishes. New study finds the shark can live over three times longer than previously estimated, which may mean it is even more vulnerable than thought.
The Marine Conservation Society wants to know if you’ve seen any basking sharks, turtles or jellyfish – in UK and Irish waters. Jellyfish? Yes, because jellyfish are the favourite food of Leatherback Turtles. And they don’t just want to know about live jellyfish but about strandings on beaches as well. Identification of live jellyfish is […]
The Giant Manta Ray is the largest living ray and a very impressive sight underwater. Mantas migrate vast distances, crossing international boundaries, in search of food. Products from manta rays have a high value in international markets, and targeted fisheries hunt them for their valuable gill rakers used in traditional Chinese medicine. Monitoring and regulation of the exploitation and trade of manta rays is urgently needed, as well as protection of key habitats.
Shark fishing needs to be banned at Osprey and Shark Reef in the Coral Sea for a Marine Reserve to work, concludes a study published yesterday. It is estimated that each year, live-aboard dive boats are directly responsible for generating at least AU$16 M worth of income. Of all the Coral Sea reef systems, Osprey Reef has the highest visitation rate by tourism operators, primarily to conduct shark dives. So, the depletion of reef sharks at Osprey Reef would have serious financial ramifications for the area. To put this into perspective, in the Maldives, the removal of only 20 grey reef sharks, with a market value of only AU$1 000, caused an estimated loss of AU$500 000 annually in diving revenue.
Pairs of SCUBA divers towed behind a small boat have been recording shark numbers at both heavily populated Pacific islands and islands away from humans. The numbers show the enormous detrimental effect that humans have on reef sharks, with 90% loss in places. In a study published in the journal Conservation Biology, a team of […]