Bioluminescence caused by some algae species is not frequent. So, if you see some clear water, you should stop to admire the scenery.
During the epidemic, not many people went to the beach in southern California, USA. But those venturing out at night will be amazed at a strange and beautiful sight, the sea water emitting a blue light as the waves crash and at low tide.
The cause of this unusual phenomenon is a tiny organism called Lingulodinium polyedrum. This algae blooms every few years in the waters around San Diego, also known as the red tide.
During the day, the algae make the sea red, but at night the show begins. Every time the water moves due to the tide or a certain boat moves, it will emit a brilliant blue light.
This glow is the result of chemicals produced inside the algae’s body when it is startled.
Scientists aren’t sure how long this phenomenon will last.
“We don’t know how long the red tide will last, because before that it usually lasted from a week to a month or so. For the best photos when watching this ocean light show, you should go to the beach in the evening at least 2 hours after sunset.” a scientist at the Scripps Institution of Oceanography said.
Cynthia Heil, a senior research scientist at the Bigelow Laboratory for Undergraduate Science in East Boothbay, Maine said: “Bioluminescence is a fairly common phenomenon in some flagellate species. It’s the same response as fireflies, triggered by chaotic motion.”
According to Scripps, this algal bloom usually occurs once every three to seven years, but over the past several decades it has become more frequent.
However, it is still difficult to predict when they will appear because scientists still do not fully understand the variables that cause algae blooms.
Melissa Carter, a programming analyst at the Scripps Oceanographic Institution, said: “Exact conditions are not known, but variables may include water temperature, wind speed, presence of other bacteria or viruses in the water.”
Carter and her colleagues studied this algae bloom whenever it occurred.
Although the bioluminescence of this algae makes an entire sea shimmer, people should exercise caution when wading into the water due to the presence of algae-eating bacteria.
Carter added that people can see similar phenomena in other locations such as Moreton Bay, Australia, where there is an algae called Noctiluca scintillans.
In Maine, there is an algae called Alexandrium fundyense that also causes red tides.
If you happen to come across a glowing body of water, beware. Although most algae are harmless, a few can contain toxins. For example, algae in Moreton Bay contains high levels of ammonia, and algae in San Diego has been linked to causing ear infections. This may be due to bacteria in the water that eat the algae rather than the algae itself.
No matter where you come across bioluminescent waters, take a moment to stop and take in the view, the view is truly breathtaking and rare.
at Blogtuan.info – Source: 24h.com.vn – Read the original article here