SO here we have yet another case of where some type of alien, unknown algae appears on the beaches of Bondi Beach, with a blood red colour as seen in other parts of the world…
- Rare algae bloom turned the sea water bright red at beaches around Sydney, Australia, this week
- Pictures reveal the spectacular night time scene created by the tiny plants, which glow fluorescent blue in the darkness
Rare algae that turned the waters at Sydney’s beaches an unsettling shade of red has been found to have an altogether more picturesque effect by night – when it glows fluorescent blue.
Several popular beaches around the Australian city – including iconic surfers’ mecca Bondi – were closed this week due to health fears when the enormous algae bloom left swathes of the seawater blood red.
These pictures, taken just before daybreak at Stanwell Park beach, reveal the spectacular effect created by the algae, dubbed sea sparkle, when darkness falls.
For years, claims have circulated that red rain which fell in India in 2001, contained cells unlike any found on Earth. Now new evidence that these cells can reproduce is about to set the debate alive…However, Wickramasinghe and co can’t resist hinting at such an exotic explanation. They’ve examined the way these fluoresce when bombarded with light and say it is remarkably similar to various unexplained emission spectra seen in various parts of the galaxy. One such place is the Red Rectangle, a cloud of dust and gas around a young star in the Monocerous constellation.
Thousands of red abalone washed up on the Sonoma coast after a phytoplankton bloom turned the waters red—and toxic. Photo: loarie.About a month ago, thousands of abalone and other invertebrates washed up along the Sonoma coast, killed by what people thought was probably a red tide, a.k.a. a harmful algal bloom. Phytoplankton—photosynthetic organisms like algae and bacteria—can multiply in number, turning the water red with their bright-colored cells and wreaking havoc on marine organisms. An interdisciplinary team of researchers banded together to find out what was going on along the Sonoma coast. Within a few weeks, they’d figured it out: sure enough, it was a red tide.http://science.kqed.org/quest/2011/10/03/red-tide-rising/
Mysterious red cells might be aliens
…specifically, Louis has isolated strange, thick-walled, red-tinted cell-like structures about 10 microns in size. Stranger still, dozens of his experiments suggest that the particles may lack DNA yet still reproduce plentifully, even in water superheated to nearly 600 degrees Fahrenheit . (The known upper limit for life in water is about 250 degrees Fahrenheit .
….Meanwhile, more down-to-earth theories abound. One Indian government investigation conducted in 2001 lays blame for what some have called the “blood rains” on algae.
“Some of these [past] accounts may have been exaggerated,” cautioned the new study’s author in reporting his findings, adding that considerable problems also dog the alien-cell proposal.
“My understanding is this: if, after an upwelling or mixing event (storm?) there is plenty of sunshine, which warms the water and makes for stable stratification, conditions are right for a bloom. If, in addition, Gonyaulax cysts waiting around on the bottom have been stirred up into the water, and have by some means (change in temperature? light?) detected that the time is good for popping open, sufficient seeds are released to start the process. Rapid reproduction ensues (by cell division; these are unicellular organisms) and crowds out everything else, by taking away the light (the water was brown!) and perhaps also by chemical means. “
Some both not all red tides are toxic. In toxic red tides, the dinoflagellates produce a chemical which acts as a neurotoxin in other animals. When the dinoflagellates are ingested by shellfish, for example, the chemicals accumulate in the shellfish tissue in high enough levels to cause serious neurological affects in birds, animals, or people which ingest the shellfish.
There are several types of neurotoxins produced by dinoflagellates. These chemicals may affect nerve action by interfering with the movement of ions across cell membranes, thus affecting muscle activity. The toxin saxitoxin, produced by Gonyaulax off the west coast of North America, andAlexandrium off the northeast coast, accumulates in shellfish. Eating contaminated shellfish causes paralytic shellfish poisoning (PSP). The worst cases of PSP result in respiratory failure and death within 12 hours. Another toxin which accumulates in shellfish is brevetoxin, produced by the dinoflagellate Karenia brevis . Brevetoxin is unique in that it becomes aerosolized when the dinoflagellates end up in the surf zone and then blows onto the beach causing respiratory irritation in humans. If you are on a beach on the Gulf coast of Florida and notice asthma-like breathing symptoms, chances are you are experiencing toxicity from a Karenia bloom. A toxin produced by the dinoflagellate Dinophysis causes diarrhetic shellfish poisoning (DSP), which results in digestive upset but which is not fatal. Ciguatera is another form of dinoflagellate toxicity in tropical areas caused by eating contaminated fish.
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