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A new analysis of bycatch data collected over the last two decades estimates that millions of marine turtles were killed as a result of fishing gear. Of the seven sea turtle species, six are currently considered threatened.
Three types of fishing gear (long-lines, gillnets, and trawls) were documented in the survey. Researchers recommend available modifications to this fishing gear, and wider usage of these modifications, to help lessen inadvertent turtle deaths. On long-line boats, which may involve trailing lines up to 40 km (about 25 miles), circular hooks, rather than the traditional J-hooks, seem to entangle less turtles. In shrimp trawls, a TED, or “Turtle Excluder Device” has proved successful in helping turtles escape capture.
A number of countries now require these modifications, but some fleets have resisted the gear updates, and others, especially in less developed areas, do not have access to the selective gear. The Mediterranean and Eastern Pacific regions, as well as the trawling operations off the west coast of Africa, appeared to have the highest rates of turtle bycatch.
In addition to fishing gear, sea turtles face other major threats. Coastal development can affect their beach nesting areas, and ocean litter has been known to drown the reptiles. In addition, turtles are still hunted in some areas for meat and for their decorative shells.
View Other Greenleap Stories on Turtles
Source: BBC
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Mother Jones
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Mother Jones Magazine is offering an on-line version of the March/April 2006 "Fate of the Oceans" issue. Topics include pollution, industrial fishing and the impact of global warming on marine life. Visit the link below to learn more:
Mother Jones Magazine
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Death by Bycatch
A new analysis of bycatch data collected over the last two decades estimates that millions of marine turtles were killed as a result of fishing gear. Of the seven sea turtle species, six are currently considered threatened.
4/8/2010
Earth Hour -- Raising Awareness about Climate Change
Earth Hour will arrive on March 27th, 2010 at 8:30-9:30 PM (local time), with goals of raising awareness and encouraging action on climate change. The event will be marked by turning off lights and all non-essential electrical appliances for one hour.
3/26/2010
Attack of the Sea Slime
In the United States, hundreds of seabirds have washed up on the coasts of the Pacific Northwest with a foamy coating of “sea slime” on their feathers.
3/10/2010
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