Featured Research

from universities, journals, and other organizations

Sharks In Peril: Ocean's Fiercest Predators Now Vulnerable To Extinction

Date:
February 18, 2008
Source:
Natural Sciences and Engineering Research Council
Summary:
The numbers of many large shark species have declined by more than half due to increased demand for shark fins and meat, recreational shark fisheries, as well as tuna and swordfish fisheries, where millions of sharks are taken as bycatch each year. Now, the global status of large sharks has been assessed by the World Conservation Union.

The scalloped hammerhead shark is threatened by shark finning -- the practice of removing only a shark's fins and dumping the still live but now helpless shark into the ocean to die.
Credit: iStockphoto/Ian Scott

Sharks are disappearing from the world's oceans. The numbers of many large shark species have declined by more than half due to increased demand for shark fins and meat, recreational shark fisheries, as well as tuna and swordfish fisheries, where millions of sharks are taken as bycatch each year.

Now, the global status of large sharks has been assessed by the World Conservation Union (IUCN), which is widely recognized as a highly comprehensive, scientific-based information source on the threat status of plants and animals.

"As a result of high and mostly unrestricted fishing pressure, many sharks are now considered to be at risk of extinction," explained Julia Baum, a member of the IUCN's Shark Specialist Group who will be speaking at the American Association for the Advancement of Science Annual Conference in Boston on February 17.

"Of particular concern is the scalloped hammerhead shark, an iconic coastal species, which will be listed on the 2008 IUCN Red List as globally 'endangered' due to overfishing and high demand for its valuable fins in the shark fin trade," added Baum, who is an NSERC Postdoctoral Fellow at Scripps Institution of Oceanography.

Baum pointed out that fishing for sharks in international waters is unrestricted, and she supports a recently adopted United Nations resolution calling for immediate shark catch limits as well as a meaningful ban on shark finning (the practice of removing only a shark's fins and dumping the still live but now helpless shark into the ocean to die).

Research at Dalhousie University over the past five years, conducted by Baum and the late Ransom Myers, demonstrated the magnitude of shark declines in the northwest Atlantic Ocean. All species the team looked at had declined by over 50 per cent since the early 1970s. For many large coastal shark species, the declines were much greater: tiger, scalloped hammerhead, bull and dusky shark populations have all plummeted by more than 95 per cent.


Story Source:

The above story is based on materials provided by Natural Sciences and Engineering Research Council. Note: Materials may be edited for content and length.


Cite This Page:

Natural Sciences and Engineering Research Council. "Sharks In Peril: Ocean's Fiercest Predators Now Vulnerable To Extinction." ScienceDaily. ScienceDaily, 18 February 2008. <www.sciencedaily.com/releases/2008/02/080217083422.htm>.
Natural Sciences and Engineering Research Council. (2008, February 18). Sharks In Peril: Ocean's Fiercest Predators Now Vulnerable To Extinction. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2008/02/080217083422.htm
Natural Sciences and Engineering Research Council. "Sharks In Peril: Ocean's Fiercest Predators Now Vulnerable To Extinction." ScienceDaily. www.sciencedaily.com/releases/2008/02/080217083422.htm (accessed July 31, 2014).

Share This




More Plants & Animals News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Visitors Feel Part of the Pack at Wolf Preserve

Visitors Feel Part of the Pack at Wolf Preserve

AP (July 31, 2014) — Seacrest Wolf Preserve on the northern Florida panhandle allows more than 10,000 visitors each year to get up close and personal with Arctic and British Columbian Wolves. (July 31) Video provided by AP
Powered by NewsLook.com
Florida Panther Rebound Upsets Ranchers

Florida Panther Rebound Upsets Ranchers

AP (July 31, 2014) — With Florida's panther population rebounding, some ranchers complain the protected predators are once again killing their calves. (July 31) Video provided by AP
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) — Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Raw: Thousands Flocking to German Crop Circle

Raw: Thousands Flocking to German Crop Circle

AP (July 30, 2014) — Thousands of people are trekking to a Bavarian farmer's field to check out a mysterious set of crop circles. (July 30) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



    Save/Print:
    Share:  

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile iPhone Android Web
    Follow Facebook Twitter Google+
    Subscribe RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins