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‘Black Holes’ In Ocean Exist, Scientists Say

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Nothing escapes the yawning chasm of a black hole – not matter, sound nor even light.

Normally confined to the reaches of space, black holes and their seemingly insatiable appetites for everything, have fascinated — and enlightened — scientists for years.

Now, they may not have to look so far to study them.

Researchers at Switzerland’s ETH Zurich and the University of Miami say black holes are among us — at least, massive eddies in the southern Atlantic Ocean bear their telltale signatures.

What a black hole is to light, an ocean eddy, scientists suggest, is to water. Dubbedmaelstroms, they’re bigger than cities, winding up billions of tonnes of ocean water so tightly, nothing escapes them.

And scientists are discovering more every day.

In a paper published earlier this month in the Journal of Fluid Mechanics, George Haller, a professor at ETH Zurich and Francisco Beron-Vera of the University of Miami claim they can track and define these engorged eddies — a feat that has, until now, proven elusive.

The ocean’s natural turbulence has thwarted previous attempts to demarcate these islands of intensity. But, by studying satellite imagery, Haller and Baron-Vera were able to identify seven black-hole types in a group of eddies, called Agulhas Rings, that regularly appear off the tip of Africa.

Their conclusion?

Maelstroms have the same mathematical properties as black holes.

Now, consider a real black hole. As explained in Science World Report, there’s a point where light being sucked into a black hole stops spiraling — bending instead, before returning to its usual position. The result is a circular orbit.

The dramatic effect of these closed light orbits, dubbed a ‘photon sphere’ by Albert Einstein, finds a parallel in these ocean vortexes, according to scientists. Essentially, the maelstrom whips up its own closed barriers, pressing whatever was sucked inside so tightly that not even a drop of these fluid particles can escape.

In fact, researchers have found eddies bearing the same bodies of water without leaking a drop for nearly a year.

”Mathematicians have been trying to understand such peculiarly coherent vortices in turbulent flows for a very long time,” George Haller explained in a statement.

That stunning sense of stability makes maelstroms something of a transportation device. Everything from the tiniest organisms to waste or oil to higher-temperature water is transported perfectly intact throughout the oceans before the maelstroms eventually lose their charge.

As the study authors note, they “create moving oases for the marine food chain or even impact climate change through their long-range transport of salinity and temperature.”

By casting light on these black holes (if you will excuse the pun), researchers could unravel the mystery of how pollution spreads throughout the environment, ETH Life reports. These maelstroms may also help scientists develops ways to at least slow down the melting of global sea ice.

More can be found on the study here.

 

Source: www.huffingtonpost.ca

 

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Euro-Divers opens to guests at Alila Kothaifaru Maldives

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In celebration of Euro-Divers’ 50 Years of Diving with Friends in the Maldives, the team have opened a new PADI 5 Star Dive Center at Alila Kothaifaru Maldives.

Alila Kothaifaru Maldives retreat lies at the northern edge of the Maldives in the tranquil Raa Atoll, reached via a panoramic 45-minute seaplane voyage from Male. The island has 80 all-pool-villas, 36 of which are over water with a private pool for your enjoyment and 44 beachfront villas designed seamlessly to immerse guests in the natural surroundings. In support of sustainable tourism, Alila hotels adopt Earth Check operating standards, integrating their environments’ natural, physical, and cultural elements.

Raa Atoll is well-known for the excellent scuba diving it offers. The underwater landscape of Raa Atoll is characterized by a high number of thilas scattered inside the lagoons. These underwater coral mountains are magnets for marine life including huge schools of tropical reef fish, a generous splash of colour, iconic bucket-list-must-see marine creatures including sharks, mantas (appearing during the entire year), turtles, and uncrowded dive sites—a perfect diver’s heaven for beginners and experienced divers. We offer a full range of PADI courses for different levels. From November till March, the Manta cleaning station is located 15 minutes away by boat.

The team from Alila Kothaifaru Maldives look forward to welcoming you soon.

Find out more at: www.euro-divers.com/alila-kothaifaru-maldives

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Marine Life & Conservation

Blue Marine Foundation launches new partnership with Dutch Caribbean Nature Alliance

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Ocean charity makes initial grant of $90,000 to marine parks on six Dutch Caribbean islands. Award will fund projects including coral protection, and training youth marine rangers.

Ocean conservation charity Blue Marine Foundation has announced it is awarding $90,000 in funding to support marine conservation in the Dutch Caribbean. A range of projects run by protected area management organisations on six islands will each receive a grant of $15,000. The funding is the first step in a longer-term partnership to support the islands and help secure sustainable financing through the Dutch Caribbean Nature Alliance (DCNA) Trust fund.

To improve ocean governance, Blue Marine uses a combination of top-down intervention and bottom-up project delivery to help local communities at the front line of conservation. It will work together with the DCNA to help marine-park organisations protect the unique and threatened biodiversity of the Dutch Caribbean.

The new partnership is an important development in the successful management of marine conservation parks in the Dutch Caribbean. The UK-based charity has established a small-grants fund to provide rapid access to support for critical conservation projects run by marine parks.

The individual projects and their local partners are:

Unique ecosystems on the islands are vulnerable to threats such as feral livestock causing sedimentation on reefs, and invasive species, including lionfish and coral diseases. They are also at risk from overfishing, climate change, coastal development, erosion and the build-up of harmful algae caused by waste water.

The islands of the Dutch Caribbean are also home to important “blue carbon” habitats – ocean ecosystems such as seagrasses, mangroves and other marine plants that suck up and lock away carbon from the earth’s atmosphere. Seagrass is so efficient at this it can capture and store carbon dioxide up to 35 times faster than tropical rainforests.  The management and protection of these blue carbon habitats is vital in the fight against climate change.

Current marine conservation measures in the islands include a 25,390 square km mammal and shark sanctuary- Yarari sanctuary- across the Exclusive Economic Zone of Bonaire, Saba and St Eustatius. All six islands have inshore Marine Protected Areas ranging in size from 10 to 60 sq km.

Blue Marine’s Senior Project Manager Jude Brown commented: “Having recently visited two of the islands, I witnessed first-hand how special this region is. Diving the waters off Saba I saw huge Tarpon swimming amongst shoals of blue tang, and hawksbill turtles feeding on the seagrass beds. I also witnessed the challenges these islands are facing from coral disease to issues with coastal development. It is an exciting opportunity to work in the Dutch Caribbean, bringing expertise and funding from Blue Marine to join with the wealth of knowledge already on the islands, to work together to protect the important marine life arounds these islands.”

Tadzio Bervoets, Director of the DNCA commented: “The Dutch Caribbean consists of the Windward Islands of St. Maarten, Saba, and St. Eustatius and the Leeward Islands of Aruba, Bonaire and Curaçao. The nature of the Dutch Caribbean contains the richest biodiversity in the Kingdom of the Netherlands. The diverse ecosystems are a magnet for tourism and at the same time the most important source of income for residents of the Dutch Caribbean. Nature on the islands is unique and important but it is also fragile. The coming week we will be in The Netherlands to present a Climate Action Plan for the Dutch Caribbean to emphasize the urgent need for a climate smart future for our islands.”


Photo: Coral reefs in the Dutch Caribbean- Photo credit: Naturepics: Y.+T. Kühnast- all rights reserved

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A luxurious dive resort in the heart of Lembeh Strait. Enjoy refined services while exploring the rich waters of Indonesia.

The resort is nestled around an ocean front deck and swimming-pool (with pool-bar) which is the perfect place to enjoy a sundowner cocktail at the end of a busy day of critter-diving.

All accommodation is full board and includes three sumptuous meals a day. Breakfast and lunch are buffet meals and in the evening dining is a la carte.

Book and stay before the end of June and benefit from no single supplements in all room types!

Booking deadline: Subject to availability – book and stay before end of June 2022

Call Diverse Travel on 01473 852002 or email info@diversetravel.co.uk.

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