Japanese fishing trawler sunk by giant jellyfish

A 10-ton fishing boat has been sunk by gigantic jellyfish off eastern Japan.



The trawler, the Diasan Shinsho-maru, capsized off Chiba`as its three-man crew was trying to haul in a net containing dozens of huge Nomura's jellyfish.


Each of the jellyfish can weigh up to 200 kg and waters around Japan have been inundated with the creatures this year. Experts believe weather and water conditions in the breeding grounds, off the coast of China, have been ideal for the jellyfish in recent months.


The crew of the fishing boat was thrown into the sea when the vessel capsized, but the three men were rescued by another trawler, according to the Mainichi newspaper. The local Coast Guard office reported that the weather was clear and the sea was calm at the time of the accident.

One of the largest jellyfish in the world, the species can grow up to 2 meters in diameter. The last time Japan was invaded on a similar scale, in the summer of 2005, the jellyfish damaged nets, rendered fish inedible with their toxic stings and even caused injuries to fishermen.

Relatively little is known about Nomura's jellyfish, such as why some years see thousands of the creatures floating across the Sea of Japan on the Tsushima Current, but last year there were virtually no sightings. In 2007, there were 15,500 reports of damage to fishing equipment caused by the creatures.

Experts believe that one contributing factor to the jellyfish becoming more frequent visitors to Japanese waters may be a decline in the number of predators, which include sea turtles and certain species of fish.

The Telegraph. Nov 2, 2009.

Last Ice Age took just SIX months to arrive

It took just six months for a warm and sunny Europe to be engulfed in ice, according to new research.

Previous studies have suggested the arrival of the last Ice Age nearly 13,000 years ago took about a decade - but now scientists believe the process was up to 20 times as fast.

In scenes reminiscent of the Hollywood blockbuster The day After Tomorrow, the Northern Hemisphere was frozen by a sudden slowdown of the Gulf Stream, which allowed ice to spread hundreds of miles southwards from the Arctic.

Geological sciences professor William Patterson, who led the research, said: 'It would have been very sudden for those alive at the time. It would be the equivalent of taking Britain and moving it to the Arctic over the space of a few months.'

Professor Patterson's findings emerged from one of the most painstaking studies of climate changes ever attempted and reinforce the theory that the earth's climate is  unstable and can switch between warm and cold incredibly quickly.

His conclusions, published in New Scientist, are based on a study of mud deposits extracted from a lake in Western Ireland, Lough Monreagh - a region he describes as having the 'best mud in the world in scientific terms'.

Professor Patterson used a precision robotic scalpel to scrape off layers of mud just 0.5mm thick. Each layer represented three months of sediment deposition, so variations between them could be used to measure changes in temperature over very short periods.

He found that temperatures had plummeted, with the lake's plants and animals rapidly dying over just a few months.


The subsequent mini Ice Age lasted for 1,300 years and was probably caused by the sudden emptying of Lake Agassiz in Canada, which burst its banks and poured freezing freshwater into the North Atlantic and Arctic Oceans.

That would have disrupted the Gulf Stream - the flows of which depend on variations in saline levels and temperature - and allowed the ice to take hold.

Some scientists believe that if the Greenland ice cap melts it could disrupt the world's ocean currents and have a similarly dramatic effect.

An iceberg melts off Ammassalik Island in Eastern Greenland. Some scientists believe that 

if the Greenland ice caps melt, an Ice Age could hit within months

Daily Mail. Nov 16, 2009.