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Jellyfish Explosion Around The World
Jellyfish Explosion Around The World
Jellyfish are producing at alarming rates and humans may have something to do with it - Explorer: Jellyfish Invasion AUGUST 8 2007
Jellyfish gather in a marine lake in Palau in the Pacific, and seen in the Gulf of Mexico in this undated handout - Huge swarms of stinging jellyfish and similar slimy animals are ruining beaches in Hawaii, the Gulf of Mexico, the Mediterranean, Australia and elsewhere, U.S. researchers reported on December 12, 2008. The report says 150 million people are exposed to jellyfish globally every year, with 500,000 people stung every year in the Chesapeake Bay, off the U.S Atlantic Coast, alone
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Jellyfish gone wild ruining beaches, report says
****************************************************
'Dead zones' and other human-caused problems cited as factors
Reuters
Dec 12, 2008
http://www. msnbc. msn. com/id/28200616/
WASHINGTON - Huge swarms of stinging jellyfish and similar slimy animals are ruining beaches in Hawaii, the Gulf of Mexico, the Mediterranean, Australia and elsewhere, U.S.researchers reported on Friday
The report says 150 million people are exposed to jellyfish globally every year, with 500,000 people stung in the Chesapeake Bay, off the U.S.Atlantic Coast, alone
Another 200,000 are stung every year in Florida, and 10,000 are stung in Australia by the deadly Portuguese man-of-war, according to the broad review by the National Science Foundation
The report, entitled "Jellyfish Gone Wild," says the Black Sea's fishing and tourism industries have lost $350 million because of a proliferation of comb jelly fish.More than 1,000 fist-sized comb jellies can be found in a cubic yard of Black Sea water during a bloom
They eat the eggs of fish and compete with them for food, wiping out the livelihoods of fishermen, according to the report
And it says a third of the total weight of all life in California's Monterey Bay is made up of jellyfish
Human activities that could be making things nice for jellyfish include pollution, climate change, introductions of non-native species, overfishing and building artificial structures such as oil and gas rigs
Creatures called salps cover up to 38,600 square miles of the North Atlantic in a regular phenomenon called the New York Bight, but researchers quoted in the report said this one may be a natural cycle
"There is clear, clean evidence that certain types of human-caused environmental stresses are triggering jellyfish swarms in some locations," William Hamner of the University of California Los Angeles said in the report
These include pollution-induced "dead zones," higher water temperatures and the spread of alien jellyfish species by shipping
jellyfish in the Mediterranean near the island of Mallorca in July 2006
Jellyfish swarm in the Mediterraneans – Skynews August 2008
..WKRG. com Video..
Pensacola beach jellyfish swarm – June 20o8
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Oceans' alarm: Jellyfish swarms
************************************
International Herald Tribune
By Elisabeth Rosenthal Published
August 3, 2008
http://www. iht. com/articles/2008/08/03/healthscience/jelly. php
BARCELONA: Blue patrol boats crisscross the swimming areas of beaches here with their huge nets skimming the water's surface.The yellow flags that urge caution and the red flags that prohibit swimming because of risky currents are sometimes topped now with blue ones warning of a new danger: swarms of jellyfish
In a period of hours during a day a couple of weeks ago, 300 people on Barcelona's bustling beaches were treated for stings, and 11 were taken to hospitals
From Spain to New York, to Australia, Japan and Hawaii, jellyfish are becoming more numerous and more widespread, and they are showing up in places where they have rarely been seen before, scientists say.The faceless marauders are stinging children blithely bathing on summer vacations, forcing beaches to close and clogging fishing nets
But while jellyfish invasions are a nuisance to swimmers and a hardship to fishermen, for scientists they are a source of more profound alarm, a signal of the declining health of the world's oceans
"These jellyfish near shore are a message the sea is sending us saying, 'Look how badly you are treating me,"' said Josep-Maria Gili, a leading jellyfish expert; he has studied them at the Institute of Marine Sciences of the Spanish National Research Council in Barcelona for more than 20 years
The explosion of jellyfish populations, scientists say, reflects a combination of severe overfishing of natural predators like tuna, sharks and swordfish; rising sea temperatures caused in part by global warming; and pollution that has depleted oxygen levels in coastal shallows
These problems are pronounced in the Mediterranean, a sea bounded by more than a dozen countries that rely on it for business and pleasure.Left unchecked in the Mediterranean and elsewhere, these problems could make the swarms of jellyfish menacing coastlines a grim vision of seas to come
Read The Rest HERE
A jellyfish off the coast of Israel The dramatic proliferation of jellyfish in oceans around the world, driven by overfishing and climate change, is a sure sign of ecosystems out of kilter, warn experts
***************************************************
Jellyfish outbreaks a sign of nature out of sync
***************************************************
AFP News
by Jerome Cartillier
Wed Jun 18, 2008
http://news. yahoo. com/s/afp/20080618/sc_afp/environmentsciencecli...
PARIS (AFP) - The dramatic proliferation of jellyfish in oceans around the world, driven by overfishing and climate change, is a sure sign of ecosystems out of kilter, warn experts
"Jellyfish are an excellent bellwether for the environment," explains Jacqueline Goy, of the Oceanographic Institute of Paris "The more jellyfish, the stronger the signal that something has changed"
Brainless creatures composed almost entirely of water, the primitive animals have quietly filled a vacuum created by the voracious human appetite for fish
Dislodging them will be difficult, marine biologists say
"Jellyfish have come to occupy the place of many other species," notes Ricardo Aguilar, research director for Oceana, a international conservation organisation
Nowhere is the sting of these poorly understood invertebrates felt more sharply than the Mediterranean basin, where their exploding numbers have devastated native marine species and threaten seaside tourism
And while much about the lampshade-like creatures remains unknown, scientists are in agreement: Pelagia noctiluca -- whose tentacles can paralyse prey and cause burning rashes in humans -- will once again besiege Mediterranean coastal waters this summer
That, in itself, is not unusual It is the frequency and persistence of these appearances that worry scientists
Two centuries worth of data shows that jellyfish populations naturally swell every 12 years, remain stable four or six years, and then subside
2008, however, will be the eighth consecutive year that medusae, as they are also known, will be present in massive numbers
The over-exploitation of ocean resources by man has helped create a near-perfect environment in which these most primitive of ocean creatures can multiply unchecked, scientists say
"When vertebrates, such as fish, disappear, then invertebrates -- especially jellyfish -- appear," says Aguilar
The collapse of fish populations boost this process in two important ways, he added When predators such as tuna, sharks, and turtles vanish, not only do fewer jellyfish get eaten, they have less competition for food
Jellyfish feed on small fish and zooplankton that get caught up in their dangling tentacles
"Jellyfish both compete with fish for plankton food, and predate directly on fish," explains Andrew Brierley from the University of St Andrews in Scotland "It is hard, therefore, to see a way back for fish once jellyfish have become established, even if commercial fishing is reduced"
Which is why Brierley and other experts were not surprised to find a huge surge in the number of jellyfish off the coast of Namibia in the Atlantic, one of the most intensely fished oceans in the world
Climate change has also been a boon to these domed gelatinous creatures in so far as warmer waters prolong their reproductive cycles
But just how many millions, or billions, of jellyfish roam the seas is nearly impossible to know, said scientists
For one things, the boneless, translucent animals -- even big ones grouped in large swarms -- are hard to spot in satellite images or sonar soundings, unlike schools of fish
They are also resist study in captivity, which means a relative paucity of academic studies
"There are only 20 percent of species of jellyfish for which we know the life cycle," said Goy
And the fact that jellyfish are not commercially exploited, with the exception of a few species eaten by gastronomes in East Asia, has also added to this benign neglect
But the measurable impact of these stinging beasts on beach-based tourism along the Mediterranean has begun to spur greater interest in these peculiar creatures whose growing presence points to dangerous changes not just in the world's oceans, but on the ground and in the air as well
Nomura's jellyfish
japanisename "echizen kurage"
This is a huge pelagic Jellyfish, found floating around at the end of a dive recently Harmless and has it's own eco-system as it drifts around
Giant jellyfish encountered while snorkeling on a dive trip at Pulau Tioman, Malaysia
Growing up to 2 meters (6 feet 7 inches) in diameter and weighing up to 220 kilograms (ca 450 pounds), Nomura's Jellyfish reside primarily in the waters between China and Japan, primarily centralized in the Yellow Sea and East China Sea where they spawn
While stings of this large jellyfish are painful, they are not usually toxic enough to cause serious harm in humans.However, the jellyfish's sting has been reported as fatal in some cases by causing a build-up of fluid in the lungs As a precaution, fisherman encountering these jellyfish wear eye protection and protective clothes To date there have only been nine reported deaths from the Nomura's sting
In some places, jellyfish density is reported to be "one hundred times higher" than normal, without explanation There was a previous spike in the population recorded in 1958 and in 1995 There have been widely disseminated theories as to the cause of the population increase, but no definite explanation One such theory is that development of ports and harbors along the Chinese coast have provided an increase in structures for the Nomura larvae to attach themselves to
The problem with combating the jellyfish is that when they are under attack or killed, they release billions of sperm or eggs which connect in the water and attach to rocks or coral formations when the conditions are favorable, the creatures detach from their home millions at a time and grow into more jellyfish.
Jellyfish are producing at alarming rates and humans may have something to do with it - Explorer: Jellyfish Invasion AUGUST 8 2007
Jellyfish gather in a marine lake in Palau in the Pacific, and seen in the Gulf of Mexico in this undated handout - Huge swarms of stinging jellyfish and similar slimy animals are ruining beaches in Hawaii, the Gulf of Mexico, the Mediterranean, Australia and elsewhere, U.S. researchers reported on December 12, 2008. The report says 150 million people are exposed to jellyfish globally every year, with 500,000 people stung every year in the Chesapeake Bay, off the U.S Atlantic Coast, alone
****************************************************
Jellyfish gone wild ruining beaches, report says
****************************************************
'Dead zones' and other human-caused problems cited as factors
Reuters
Dec 12, 2008
http://www. msnbc. msn. com/id/28200616/
WASHINGTON - Huge swarms of stinging jellyfish and similar slimy animals are ruining beaches in Hawaii, the Gulf of Mexico, the Mediterranean, Australia and elsewhere, U.S.researchers reported on Friday
The report says 150 million people are exposed to jellyfish globally every year, with 500,000 people stung in the Chesapeake Bay, off the U.S.Atlantic Coast, alone
Another 200,000 are stung every year in Florida, and 10,000 are stung in Australia by the deadly Portuguese man-of-war, according to the broad review by the National Science Foundation
The report, entitled "Jellyfish Gone Wild," says the Black Sea's fishing and tourism industries have lost $350 million because of a proliferation of comb jelly fish.More than 1,000 fist-sized comb jellies can be found in a cubic yard of Black Sea water during a bloom
They eat the eggs of fish and compete with them for food, wiping out the livelihoods of fishermen, according to the report
And it says a third of the total weight of all life in California's Monterey Bay is made up of jellyfish
Human activities that could be making things nice for jellyfish include pollution, climate change, introductions of non-native species, overfishing and building artificial structures such as oil and gas rigs
Creatures called salps cover up to 38,600 square miles of the North Atlantic in a regular phenomenon called the New York Bight, but researchers quoted in the report said this one may be a natural cycle
"There is clear, clean evidence that certain types of human-caused environmental stresses are triggering jellyfish swarms in some locations," William Hamner of the University of California Los Angeles said in the report
These include pollution-induced "dead zones," higher water temperatures and the spread of alien jellyfish species by shipping
jellyfish in the Mediterranean near the island of Mallorca in July 2006
Jellyfish swarm in the Mediterraneans – Skynews August 2008
..WKRG. com Video..
Pensacola beach jellyfish swarm – June 20o8
************************************
Oceans' alarm: Jellyfish swarms
************************************
International Herald Tribune
By Elisabeth Rosenthal Published
August 3, 2008
http://www. iht. com/articles/2008/08/03/healthscience/jelly. php
BARCELONA: Blue patrol boats crisscross the swimming areas of beaches here with their huge nets skimming the water's surface.The yellow flags that urge caution and the red flags that prohibit swimming because of risky currents are sometimes topped now with blue ones warning of a new danger: swarms of jellyfish
In a period of hours during a day a couple of weeks ago, 300 people on Barcelona's bustling beaches were treated for stings, and 11 were taken to hospitals
From Spain to New York, to Australia, Japan and Hawaii, jellyfish are becoming more numerous and more widespread, and they are showing up in places where they have rarely been seen before, scientists say.The faceless marauders are stinging children blithely bathing on summer vacations, forcing beaches to close and clogging fishing nets
But while jellyfish invasions are a nuisance to swimmers and a hardship to fishermen, for scientists they are a source of more profound alarm, a signal of the declining health of the world's oceans
"These jellyfish near shore are a message the sea is sending us saying, 'Look how badly you are treating me,"' said Josep-Maria Gili, a leading jellyfish expert; he has studied them at the Institute of Marine Sciences of the Spanish National Research Council in Barcelona for more than 20 years
The explosion of jellyfish populations, scientists say, reflects a combination of severe overfishing of natural predators like tuna, sharks and swordfish; rising sea temperatures caused in part by global warming; and pollution that has depleted oxygen levels in coastal shallows
These problems are pronounced in the Mediterranean, a sea bounded by more than a dozen countries that rely on it for business and pleasure.Left unchecked in the Mediterranean and elsewhere, these problems could make the swarms of jellyfish menacing coastlines a grim vision of seas to come
Read The Rest HERE
A jellyfish off the coast of Israel The dramatic proliferation of jellyfish in oceans around the world, driven by overfishing and climate change, is a sure sign of ecosystems out of kilter, warn experts
***************************************************
Jellyfish outbreaks a sign of nature out of sync
***************************************************
AFP News
by Jerome Cartillier
Wed Jun 18, 2008
http://news. yahoo. com/s/afp/20080618/sc_afp/environmentsciencecli...
PARIS (AFP) - The dramatic proliferation of jellyfish in oceans around the world, driven by overfishing and climate change, is a sure sign of ecosystems out of kilter, warn experts
"Jellyfish are an excellent bellwether for the environment," explains Jacqueline Goy, of the Oceanographic Institute of Paris "The more jellyfish, the stronger the signal that something has changed"
Brainless creatures composed almost entirely of water, the primitive animals have quietly filled a vacuum created by the voracious human appetite for fish
Dislodging them will be difficult, marine biologists say
"Jellyfish have come to occupy the place of many other species," notes Ricardo Aguilar, research director for Oceana, a international conservation organisation
Nowhere is the sting of these poorly understood invertebrates felt more sharply than the Mediterranean basin, where their exploding numbers have devastated native marine species and threaten seaside tourism
And while much about the lampshade-like creatures remains unknown, scientists are in agreement: Pelagia noctiluca -- whose tentacles can paralyse prey and cause burning rashes in humans -- will once again besiege Mediterranean coastal waters this summer
That, in itself, is not unusual It is the frequency and persistence of these appearances that worry scientists
Two centuries worth of data shows that jellyfish populations naturally swell every 12 years, remain stable four or six years, and then subside
2008, however, will be the eighth consecutive year that medusae, as they are also known, will be present in massive numbers
The over-exploitation of ocean resources by man has helped create a near-perfect environment in which these most primitive of ocean creatures can multiply unchecked, scientists say
"When vertebrates, such as fish, disappear, then invertebrates -- especially jellyfish -- appear," says Aguilar
The collapse of fish populations boost this process in two important ways, he added When predators such as tuna, sharks, and turtles vanish, not only do fewer jellyfish get eaten, they have less competition for food
Jellyfish feed on small fish and zooplankton that get caught up in their dangling tentacles
"Jellyfish both compete with fish for plankton food, and predate directly on fish," explains Andrew Brierley from the University of St Andrews in Scotland "It is hard, therefore, to see a way back for fish once jellyfish have become established, even if commercial fishing is reduced"
Which is why Brierley and other experts were not surprised to find a huge surge in the number of jellyfish off the coast of Namibia in the Atlantic, one of the most intensely fished oceans in the world
Climate change has also been a boon to these domed gelatinous creatures in so far as warmer waters prolong their reproductive cycles
But just how many millions, or billions, of jellyfish roam the seas is nearly impossible to know, said scientists
For one things, the boneless, translucent animals -- even big ones grouped in large swarms -- are hard to spot in satellite images or sonar soundings, unlike schools of fish
They are also resist study in captivity, which means a relative paucity of academic studies
"There are only 20 percent of species of jellyfish for which we know the life cycle," said Goy
And the fact that jellyfish are not commercially exploited, with the exception of a few species eaten by gastronomes in East Asia, has also added to this benign neglect
But the measurable impact of these stinging beasts on beach-based tourism along the Mediterranean has begun to spur greater interest in these peculiar creatures whose growing presence points to dangerous changes not just in the world's oceans, but on the ground and in the air as well
Nomura's jellyfish
japanisename "echizen kurage"
This is a huge pelagic Jellyfish, found floating around at the end of a dive recently Harmless and has it's own eco-system as it drifts around
Giant jellyfish encountered while snorkeling on a dive trip at Pulau Tioman, Malaysia
Growing up to 2 meters (6 feet 7 inches) in diameter and weighing up to 220 kilograms (ca 450 pounds), Nomura's Jellyfish reside primarily in the waters between China and Japan, primarily centralized in the Yellow Sea and East China Sea where they spawn
While stings of this large jellyfish are painful, they are not usually toxic enough to cause serious harm in humans.However, the jellyfish's sting has been reported as fatal in some cases by causing a build-up of fluid in the lungs As a precaution, fisherman encountering these jellyfish wear eye protection and protective clothes To date there have only been nine reported deaths from the Nomura's sting
In some places, jellyfish density is reported to be "one hundred times higher" than normal, without explanation There was a previous spike in the population recorded in 1958 and in 1995 There have been widely disseminated theories as to the cause of the population increase, but no definite explanation One such theory is that development of ports and harbors along the Chinese coast have provided an increase in structures for the Nomura larvae to attach themselves to
The problem with combating the jellyfish is that when they are under attack or killed, they release billions of sperm or eggs which connect in the water and attach to rocks or coral formations when the conditions are favorable, the creatures detach from their home millions at a time and grow into more jellyfish.
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