Rare, pristine coral reef found off Tahiti coast

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Tahiti Coral Reef

In this photo provided by @alexis.rosenfeld, researchers for the French National Centre for Scientific Research study corals in the waters off the coast of Tahiti of the French Polynesia in December 2021. Deep in the South Pacific, scientists have explored a rare stretch of pristine corals shaped like roses off the coast of Tahiti. The reef is thought to be one of the largest found at such depths and seems untouched by climate change or human activities. (Alexis Rosenfeld/@alexis.rosenfeld via AP)

VICTORIA MILKO

Wed, January 19, 2022, 2:03 PM

Deep in the South Pacific, scientists have explored a rare stretch of pristine corals shaped like roses off the coast of Tahiti. The reef is thought to be one of the largest found at such depths and seems untouched by climate change or human activities.

Laetitia Hédouin said she first saw the corals during a recreational dive with a local diving club months earlier.

“When I went there for the first time, I thought, ‘Wow — we need to study that reef. There’s something special about that reef,” said Hédouin, a researcher at the French National Center for Scientific Research in Moorea, French Polynesia.

What struck Hédouin was that the corals looked healthy and weren't affected by a bleaching event in 2019. Corals are tiny animals that grow and form reefs in oceans around the world.

Globally, coral reefs have been depleted from overfishing and pollution. Climate change is also harming delicate corals — including those in areas neighboring the newly discovered reef — with severe bleaching caused by warmer waters. Between 2009 and 2018, 14% of the world's corals were killed, according to a 2020 report by the Global Coral Reef Monitoring Project.

The newfound reef, stretching 2 miles (3 kilometers), was studied late last year during a dive expedition supported by UNESCO. Unlike most of the world’s mapped corals, which are found in relatively shallow waters, this one was deeper — between 115 feet (35 meters) to 230 feet (70 meters).

Exploring such depths posed a challenge: the deeper a diver goes underwater, the shorter amount of time can be safely spent at each depth. The team was equipped with special tanks and did 200 hours of diving to study the reef, including taking photographs, measurements and samples of the coral.

The reef is in a spot where many researchers haven't spent a lot of time in, said former National Oceanic and Atmospheric Administration oceanographer Mark Eakin.

“We’ll be seeing more of these discoveries as the technology is applied to these locations,” said Eakin. “We may find some bigger ones somewhere, but I think this is always going to be an unusual reef.”

 

Israel study: 4th vaccine shows limited results with omicron

 

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 OTHERS ARE GETTING BURD NEOUT 
 AND LEAVING. BUT THIS VIR US 
 ISN'T LEAVING. 

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JOSEF FEDERMAN

Mon, January 17, 2022, 10:21 AM

JERUSALEM (AP) — An Israeli hospital on Monday said preliminary research indicates a fourth dose of the coronavirus vaccine provides only limited defense against the omicron variant that is raging around the world.

Sheba Hospital last month began administering a fourth vaccine to more than 270 medical workers — 154 who received a Pfizer-BioNtech vaccine and 120 others who received Moderna's. All had previously been vaccinated three times with the Pfizer-BioNtech vaccine.

The clinical trial found that both groups showed increases in antibodies “slightly higher” than following the third vaccine last year. But it said the increased antibodies did not prevent the spread of omicron.

“Despite increased antibody levels, the fourth vaccine only offers a partial defense against the virus,” said Dr. Gili Regev-Yochay, director of the hospital's infection disease unit. “The vaccines, which were more effective against previous variants, offer less protection versus omicron."

The preliminary results raised questions about Israel's decision to offer a second booster shot — and fourth overall — to its over-60 population. The government says over 500,000 people have received the second booster in recent weeks.

Dr. Nahman Ash, director of Israel's Health Ministry, said the research did not mean the fourth vaccine effort was a mistake. “It returns the level of antibodies to what it was at the beginning of the third booster. That has great importance, especially among the older population,” he told Channel 13 TV.

But he said the research would be taken into account as authorities debate whether to expand the additional booster campaign to the broader population.

Israel was one of the first countries last year to widely vaccinate its population and last summer became the first to offer a booster shot. The latest booster campaign for older Israelis also is believed to be the first of its kind in the world.

Israel's aggressive vaccination efforts have not been able to stop an omicron outbreak in recent weeks. The variant has caused record-setting infection levels and sent a growing number of people to the hospital, though the numbers of seriously ill remain below previous waves.