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Giant, Mucus-Like Sea Blobs on the Rise, Pose Danger
National Geographic News ^ | 08 Sep 2009 | Christine Dell'Amore

Posted on 10/09/2009 7:36:14 AM PDT by BGHater

Beware of the blob—this time, it's for real.

As sea temperatures have risen in recent decades, enormous sheets of a mucus-like material have begun forming more often, oozing into new regions, and lasting longer, a new Mediterranean Sea study says (sea "mucus" blob pictures).

And the blobs may be more than just unpleasant.

Up to 124 miles (200 kilometers) long, the mucilages appear naturally, usually near Mediterranean coasts in summer. The season's warm weather makes seawater more stable, which facilitates the bonding of the organic matter that makes up the blobs (Mediterranean map).

Now, due to warmer temperatures, the mucilages are forming in winter too—and lasting for months.

Until now, the light-brown "mucus" was seen as mostly a nuisance, clogging fishing nets and covering swimmers with a sticky gel—newspapers from the 1800s show beach-goers holding their noses, according to study leader Roberto Danovaro, director of the marine science department at the Polytechnic University of Marche in Italy.

But the new study found that Mediterranean mucilages harbor bacteria and viruses, including potentially deadly E. coli, Danovaro said. Those pathogens threaten human swimmers as well as fish and other sea creatures, according to the report, published September 16 in the journal PloS One.

(Watch video of the mucus-like sea blobs.)

Blobs Born of "Marine Snow"

A mucilage begins as "marine snow": clusters of mostly microscopic dead and living organic matter, including some life-forms visible to the naked eye—small crustaceans such as shrimp and copepods (copepod picture), for example.

Over time, the snow picks up other tiny hitchhikers, looking for a meal or safety in numbers, and may grow into a mucilage.

The blobs were first identified in 1729 in the Mediterranean, where they're most often seen. The sea's relative stillness and shallowness make the water column more stable, providing ideal conditions for mucilage formation.

For the new study, Danovaro and colleagues studied historical reports of mucilage in the Mediterranean from 1950 to 2008. Outbreaks, they discovered, were more likely when sea-surface temperatures were warmer than average.

Swimming Into "Mucus"

In 1991, Italian marine biologist Serena Fonda Umani swam alongside a mucilage—the mass is too dense to swim inside—in the Adriatic Sea, an arm of the Mediterranean (Adriatic Sea map).

She remembers diving about 50 feet (15 meters) down when she got the sensation of a ghost floating over her—"sort of an alien experience."

Umani, a co-author of the new study with Danovaro and Antonio Pusceddu, of the Polytechnic University of Marche, has also dived into marine snow—the mucilage's precursor.

She described it like swimming through a sugar solution. Out of the water, the dried "sugar" stiffened her hair and stuck to her wetsuit.

"The suit was impossible to wash totally, because it was covered by a layer of greenish slime," said Umani, of Italy's University of Trieste. "It was a nightmare."

Few people would purposely swim into a mucilage, said Farooq Azam, a marine microbiologist at the University of California's Scripps Institution of Oceanography.

"If you were not familiar with this—and especially if you were familiar—you wouldn't want to go near it," said Azam, who was not involved in the new study.

A giant odiferous blob drifting offshore is "certainly not the seascape that one goes to the beach [for]," Azam added.

Public Health Hazard

Eager to see if the blobs' side effects extend beyond ruined wetsuits, Umani and colleagues sampled coastal waters and mucilage from the Adriatic in 2007. The warm, shallow sea is like a "big bathtub," Scripps's Azam said—an ideal natural laboratory for studying the blobs.

The study team discovered that the blobs are hot spots for viruses and bacteria, including the deadly E. coli. Coastal communities regularly test for E. coli, and its presence is enough to close beaches to swimming.

Study leader Donavaro said, "Now we see that … the release of pathogens from the mucilage can be potentially problematic" for human health.

(Related: "Beach Bacteria Warning: That Sand May Be Contaminated.")

People who swim through mucilage can also develop skin conditions such as dermatitis, he added.

Suffocated by Blobs

Fish and other marine animals that have no choice but to swim with mucilages are most vulnerable to their disease-carrying bacteria, which can kill even large fish, the study says.

The noxious masses can also trap animals, coating their gills and suffocating them, Danovaro said.

And the biggest blobs can sink to the bottom, acting like a huge blanket that smothers life on the seafloor.

Mucilages Going Global?

Mucilages aren't a concern for just the Mediterranean, Danovaro added. Recent studies tentatively suggest that mucus may be spreading throughout oceans from the North Sea (map) to Australia, perhaps because of rising temperatures, he said.

"It's a good example [of what will happen if] we don't do something to stop climate warming," Danovaro said. "There are consequences [if] we continue to deny the scientific evidence."

Beyond warm temperatures, it's still not exactly clear what drives the blobs' formation, Scripps' Azam pointed out. For instance, no one knows why the dead marine matter in the blobs doesn't decompose.

"It's important we do find out" what's driving the rise of the blobs, Azam said, "for the sake of the rest of the worlds' oceans."


Marine biologist Serena Fonda Umani approaches a blob of dead and living organic matter, called a mucilage, in the Adriatic Sea, an arm of the Mediterranean, in 1991.

As temperatures have risen in the Mediterranean in recent decades, mucilages have been forming more often and in more places, says a September 2009 study that also found harmful bacteria in the blobs.


TOPICS: Science; Weird Stuff
KEYWORDS: blob; catastrophe; catastrophism; mucus; ocean; science
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To: BGHater

Looks like something I left in some tp this morning, only bigger.


21 posted on 10/09/2009 7:49:42 AM PDT by kickonly88 (I love fossil fuel!)
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To: BGHater

Perhaps a Nobel Prize would appease them.


22 posted on 10/09/2009 7:51:02 AM PDT by Interesting Times (For the truth about "swift boating" see ToSetTheRecordStraight.com)
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To: Interesting Times

I was thinking more on the lines of Dead Ted Kennedy and Algore!


23 posted on 10/09/2009 7:55:26 AM PDT by Never2baCrat
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To: BGHater

We’re all gonna DIE alert!!!


24 posted on 10/09/2009 8:02:27 AM PDT by DustyMoment (FloriDUH - proud inventors of pregnant/hanging chads and judicide!!)
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To: BGHater

Michael Moore..that you?


25 posted on 10/09/2009 8:02:33 AM PDT by beethovenfan (If Islam is the solution, the "problem" must be freedom.)
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To: BGHater

I wonder if the stuff could be used somehow, maybe as fuel or something. It is organic.


26 posted on 10/09/2009 8:03:46 AM PDT by giotto
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To: skeeter


Giant Booger receiving the Nobel Peace Prize
27 posted on 10/09/2009 8:09:14 AM PDT by rdax
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To: BGHater

Anybody got that picture of Teddy Kennedy in his bathing suit?


28 posted on 10/09/2009 8:10:32 AM PDT by popdonnelly (Yes, we disagree - no, we won't shut up - no, we won't quit.)
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To: rdax

Just atomized my coffee.


29 posted on 10/09/2009 8:14:01 AM PDT by skeeter (Pterocarya fraxinifolia)
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To: BGHater

Whale Snot!


30 posted on 10/09/2009 8:30:18 AM PDT by US Navy Vet
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To: BGHater; 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; ...
Thanks BGHater. We'll need some tissues here!
 
Catastrophism
 
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31 posted on 10/09/2009 2:37:51 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/__Since Jan 3, 2004__Profile updated Monday, January 12, 2009)
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To: BGHater

Eventually, these blobs drag themselves on shore, take on a more solid form, and start making “documentary films” like “Bowling for Columbine”, or “Fahrenheit 911”.


32 posted on 10/09/2009 2:40:48 PM PDT by ArrogantBustard (Western Civilization is Aborting, Buggering, and Contracepting itself out of existence.)
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To: BGHater

Mother Earth: “I hab a code”.


33 posted on 10/09/2009 3:00:21 PM PDT by LiberConservative ("Sarah Palin irritates all the right people." -Dennis Miller)
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To: SunkenCiv

You’re going to need more than a tissue for boogers that size.


34 posted on 10/09/2009 3:31:37 PM PDT by fanfan (Why did they bury Barry's past?)
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To: BGHater
At the risk of receiving a Nobel Prize of some sort I will nevertheless suggest we experiment by banning europeans from swimming in the Mediterranean. I suspect these mucilages will quickly disappear (No - I cannot be banned - I am now a Nobel candidate ;-).

Please do put me on the Giant, Mucus-Like Sea Blobs Ping List. ;-)


I will say this article is useless. "A blob of dead and living organic matter"? Could we address the living part? What is it? Animal, vegetable or mineral? What happens to it if sprayed with DDT? Roundup?
35 posted on 10/09/2009 4:18:59 PM PDT by Tunehead54 (Nothing funny here ;-)
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To: goseminoles
Lonely sperm whale perhaps??

Blind, furry finned whale's fault...

36 posted on 10/09/2009 4:22:08 PM PDT by IrishPennant (Then join hand in hand, brave Americans all! By uniting we stand, by dividing we fall.)
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To: IrishPennant

Nothing like a fresh swin in the morning to carry you over the whole day!

37 posted on 10/09/2009 5:20:34 PM PDT by Cvengr (Adversity in life and death is inevitable. Thru faith in Christ, stress is optional.)
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To: Cvengr

Ewwwwwwwwwww...


38 posted on 10/09/2009 5:56:45 PM PDT by IrishPennant (Then join hand in hand, brave Americans all! By uniting we stand, by dividing we fall.)
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To: BGHater

Must have been from a blowfish...


39 posted on 10/11/2009 5:36:59 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/__Since Jan 3, 2004__Profile updated Monday, January 12, 2009)
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To: Cvengr

Must have been from a blowfish.


40 posted on 10/11/2009 5:37:17 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/__Since Jan 3, 2004__Profile updated Monday, January 12, 2009)
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