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Nomura's Jellyfish (Nemopilema nomurai)

rynner2

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Japanese fishing trawler sunk by giant jellyfish
A 10-ton fishing boat has been sunk by gigantic jellyfish off eastern Japan.
By Julian Ryall in Tokyo
Published: 7:00AM GMT 02 Nov 2009

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.

http://www.telegraph.co.uk/earth/648375 ... yfish.html
 
rynner2 said:
Japanese fishing trawler sunk by giant jellyfish
A 10-ton fishing boat has been sunk by gigantic jellyfish off eastern Japan.
By Julian Ryall in Tokyo
Published: 7:00AM GMT 02 Nov 2009

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.

http://www.telegraph.co.uk/earth/648375 ... yfish.html

Giant jellyfish invade Japan
Millions of 6ft, 440lb jellyfish are congregating off the western coast of Japan, their numbers apparently boosted by rising sea temperatures and a decline in natural predators.
By Julian Ryall in Tokyo 4:00PM GMT 10 Mar 2011

Nomura's jellyfish are one of the largest species of the creature in the world. Their scale was demonstrated in the autumn of 2009, when a 10-ton fishing boat was sunk as the crew tried to haul in a net containing dozens of the creatures.

Increasing numbers of the jellyfish have been recorded in the Sea of Japan since 2002, with experts suggesting the population explosion in recent years is due to the 1.89 degree Fahrenheit increase in temperature in waters off China making conditions more favourable for breeding.

In the early 1900s, according to Professor Shinichi Uye, a leading expert on the species at the Graduate School of Biosphere Science of Hiroshima University, large numbers were only reported every 40 years or so.

Another contributing factor, experts believe, is a decline in the number of predators, which include sea turtles and certain species of fish.

Japan was invaded on a similar scale in the summer of 2005, when the jellyfish damaged nets, rendered fish inedible with their toxic stings and even caused injuries to fishermen. In 2007, there were 15,500 reports of damage to fishing equipment caused by the creatures.

...

http://www.telegraph.co.uk/earth/earthn ... Japan.html
 
As it turns out, Nomura's Jellyfish has one of the most complex toxin arsenals ever studied ...
This Giant Jellyfish's Venom Is So Complex, Scientists Aren't Sure What Makes It Deadly

Somewhere out there in the deep lies a huge jellyfish, just waiting to unleash a complex cocktail of venom via its many long tentacles.

Weighing up to 200 kilograms (440 pounds), the giant jellyfish Nemopilema nomurai, more commonly known as Nomura's jellyfish, is one of the largest jellyfish species in the world, and it stings hundreds of thousands of unsuspecting swimmers in China, Korea, and Japan every year.

When stings occur, the creature's venom causes an immediate and severe pain, followed by redness and swelling. In rare cases, stings can lead to shock, severe injury, or even death.

Ultimately, we still don't know what makes this creature's venom so dangerous (being evidently deadly for some people), but we're getting closer to finding the truly lethal component.

In a new study, scientists sat down to analyse this incredible venom through genomic sequencing, transcriptomics, and proteomics. In doing so, they discovered an incredibly complex mixture of over 200 sting-related toxins, each of which could be targeting specific organs or harming bodily systems. ...

FULL STORY: https://www.sciencealert.com/this-g...omplex-it-s-hard-to-tell-what-makes-it-deadly
 
The Japanese company Tango Jersey Dairy produces a vanilla and jellyfish ice cream using Nomura's jellyfish.
 
The Japanese company Tango Jersey Dairy produces a vanilla and jellyfish ice cream using Nomura's jellyfish.

And I see it can be poisonous, if the toxic parts of the jellyfish aren't carefully removed.
Wonder if they serve it with hundreds and thousands so consumers can top themselves?
 
They could be used for the jelly bits you get round pork pies.
 
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