A diver examines bleached coral in French Polynesia in 2019. ALEXIS ROSENFELD / GETTY IMAGES
When someone offers to point out bright spots on anything in the natural world, we are all ears. When the author is Nicola Jones, all the more:
Finding Bright Spots in the Global Coral Reef Catastrophe
The first-ever report on the world’s coral reefs presents a grim picture, as losses mount due to global warming. But there are signs of hope — some regions are having coral growth, and researchers found that corals can recover if given a decade of reprieve from hot water.
When ecological genomicist Christian Voolstra started work on corals in Saudi Arabia in 2009, one of the biggest bonuses to his job was scuba diving on the gorgeous reefs. Things have changed. “I was just back in September and I was shocked,” says Voolstra, now at the University of Konstanz in Germany. “There’s a lot of rubble. The fish are missing. The colors are missing.” Continue reading
Whale stories have been in our pages on a regular basis over the last ten years not only because of their charisma. Because of how long they have been on the planet, their future should matter to mankind. The biggest of the species hiding in plain sight is increasingly spotted in ancestral waters, which seems like good news, but read on:
Some experts fear climate crisis is leading creatures back to area where they were hunted almost to extinction
The creatures may have returned to Galicia out of a form of homesickness, or ancestral memory. Photograph: Bottlenose Dolphin Research Institute
Blue whales, the world’s largest mammals, are returning to Spain’s Atlantic coast after an absence of more than 40 years.
The first one was spotted off the coast of Galicia in north-west Spain in 2017 by Bruno Díaz, a marine biologist who is head of the Bottlenose Dolphin Research Institute in O Grove, Galicia. Continue reading
Thanks to Robert Moor for these reviews:
Two new books, Edith Widder’s “Below the Edge of Darkness” and Helen Scales’s “The Brilliant Abyss,” explore the darkest reaches and all that glows there.
In the deep sea, it is always night and it is always snowing. A shower of so-called marine snow — made up of pale flecks of dead flesh, plants, sand, soot, dust and excreta — sifts down from the world above. When it strikes the seafloor, or when it is disturbed, it will sometimes light up, a phenomenon known, wonderfully, as “snow shine.” Vampire squids, umbrella-shaped beings with skin the color of persimmons, float around collecting this luminous substance into tiny snowballs, which they calmly eat. They are not alone in this habit. Most deep-sea creatures eat snow, or they eat the snow eaters.
Until fairly recently, it was widely believed that the deep seas were mostly devoid of life. For centuries, fishermen hauled in deep-sea trawling nets filled with slime, not knowing that these were carcasses. Some animals, adapted to the pressure of the deep, are so delicate that in lighter waters a mere wave of your hand could reduce them to shreds. The myth of the dead deep sea, known as the Abyssus Theory, was disproved by a series of dredging and trawling expeditions in the 19th century, including a German scientific expedition in 1898 that pulled up the first known vampire squid. But the misconception nevertheless lingered. In 1977, a geologist piloting a submersible near the mouth of a hydrothermal vent, and finding it swarming with creatures, asked the research crew up above, “Isn’t the deep ocean supposed to be like a desert?” Continue reading
A deep-sea shrimp spews bioluminescent chemicals at its predator, a viperfish. EDITH WIDDER
Nothing like bioluminescence to take your mind off of other things for a while. Thanks to Yale e360 for this:
In an interview with Yale Environment 360, marine biologist Edith Widder talks about her pioneering research into the world of bioluminescent organisms in the deep oceans and warns of the dangers, from trawling to oil drilling, that imperil this hidden realm.
Atolla vanhoeffeni, a bioluminescent deep-sea jellyfish. EDITH WIDDER
Until recently, the depths of the world’s oceans remained almost entirely unexplored. But advances in submersible technology are increasingly giving scientists a window into this little-known universe. One of the leaders in this exploration is marine biologist Edith Widder, who has extensively studied bioluminescent, or light-producing, organisms that use this trait to communicate, defend themselves, and hunt in darkness. Among other things, Widder has worked with engineers to develop highly sensitive deep-sea light meters and special cameras, like the remotely operated Eye-in-the-Sea, which allow for real-time monitoring of the seafloor. Continue reading
Researchers with DeepGreen Metals deploy a box core tool to capture a sample of the seafloor. THE METALS COMPANY
As more and more households and businesses and governments plan their switch to electric vehicles, considering the ripple effects is as important now as it was in the age of fossil-fueled vehicles:
The electric vehicle boom is driving a surge in demand for prized metals needed for batteries and other components. Some companies say the solution lies in mining the deep oceans, but scientists say that could irreversibly damage a vast, largely pristine ecosystem.
A polymetallic nodule containing manganese, nickel, cobalt and copper gathered from the seafloor. THE METALS COMPANY
Nauru, lying about halfway across the vast expanse of the Pacific Ocean between Australia and Hawaii, is the world’s smallest island nation. But in the emerging industry of deep-sea mining, it punches far above its weight.
This June, Nauru gave notice to the International Seabed Authority (ISA), the UN agency charged with regulating mining in international waters, that it was triggering the so-called two-year rule: The agency will have to consider any application for a deep-sea mining license two years from now, under whatever regulations are on the books at the time. This effectively forces the ISA’s hand to finalize a regulatory mining code before that deadline. With this latest development, a once-fanciful idea may soon become a global industry. Continue reading
The Unesco world heritage committee’s decision on the Great Barrier Reef’s ‘in danger’ status is currently scheduled for 23 July. Photograph: James Cook University/AFP via Getty Images
It’s been a couple months since we asked anyone the fundamental question. Ok, we acknowledge our not being qualified to make the scientific judgement on whether the Great Barrier Reef is in sufficient danger to be listed as such, officially. But UNESCO has the qualified scientists, so let them do their job without undue influence. It sure seems likely to help the entire world to see how fossil-fueled climate change is impacting such natural wonders. It would raise consciousness in a way that might even be good for Australia–whose government obviously thinks otherwise. Hopefully UNESCO will stick to its principles and resist this lobbying. When oil-based economies come to lend a hand, watch out for conflict of interest:
Exclusive: oil rich nations back push against Unesco recommendation to have reef placed on world heritage ‘in danger’ list Continue reading
Mariko Wallen and Louis Godfrey tend to the seaweed on their farm in Placencia, Belize. This farm grows two species: Eucheuma (for consumption) and Gracilaria (used for skin treatments and cosmetics). The farm is part of a program sponsored by TNC to bring seaweed aquaculture to the area in cooperation with the Placencia Fishermen Cooperative.
Thanks to the Nature Conservancy’s Cool Green Science website for this:
Bivalve and seaweed farming systems result in measurable increases in fish and invertebrate abundance and diversity, new research from The Nature Conservancy, University of New England, University of Melbourne, and the University of Adelaide finds. Continue reading
Guardian graphic | Source: Morales-Caselles et al, Nature Sustainability, 2021
Thanks, Damian Carrington, for getting us the data that Morales-Caselles et al compiled making us wonder whether convenience is worth this cost:
Just 10 plastic products make up 75% of all items and scientists say the pollution must be stopped at source
Plastic items from takeaway food and drink dominate the litter in the world’s oceans, according to the most comprehensive study to date. Continue reading
Thanks to YaleE360 for this brief explanatory note on Blue Carbon Projects from a Colombian perspective:
A mangrove preservation project along Colombia’s Caribbean coast is using a more comprehensive method to calculate how much carbon is stored in coastal and marine ecosystems, potentially boosting global efforts to conserve so-called blue carbon. Continue reading
A seagrass meadow near Atauro Island, Timor-Leste. PAUL HILTON FOR CONSERVATION INTERNATIONAL
Thanks to Nicola Jones, as ever, and to Yale e360 for publishing this explanatory article on a relatively new topic:
Seagrasses, mangrove forests, and coastal wetlands store vast amounts of carbon, and their preservation and restoration hold great potential to bank CO2 and keep it out of the atmosphere. But can the blue carbon market avoid the pitfalls that have plagued land-based programs?
A mangrove forest on the Leizhou Peninsula at the southern tip of China. KYLE OBERMANN
Off the shores of Virginia, vast meadows of seagrass sway in the shallow waters. Over the past two decades, conservation scientists have spread more than 70 million seeds in the bays there, restoring 3,600 hectares (9,000 acres) of an ecosystem devastated by disease in the 1930s. The work has brought back eelgrass (Zostera marina) — a keystone species that supports crustaceans, fish, and scallops, and is now absorbing the equivalent of nearly half a metric ton of CO2 per hectare per year. Continue reading
Purple sea urchins have boomed off Northern California, destroying kelp forests that provide a crucial ecosystem. Steve Lonhart / NOAA MBNMS
Kelp is being farmed now, but where it is a naturally occurring forest it needs help. Thanks to National Public Radio (USA) for this:
They’re purple, spiky and voracious, and just off the West Coast, there are more of them than you can count.
Purple sea urchins have exploded in recent years off California, covering the ocean floor in what divers describe as a “purple carpet.” Continue reading
Researchers said that the blue whale song that crackled through the team’s underwater recordings was unlike any they had heard. Robert Baldwin/Environment Society of Oman
Thanks to Katherine J. Wu for this, especially for sharing the recordings of the whale song, and the musical reference for how to think about the difference between this whale population’s song and the that of other whale populations:
The whales in the group seem to sing a unique song.
Weighing up to 380,000 pounds and stretching some 100 feet long, the blue whale — the largest creature to have ever lived on Earth — might at first seem difficult for human eyes and ears to miss.
But a previously unknown population of the leviathans has long been lurking in the Indian Ocean, leaving scientists none the wiser, new research suggests. Continue reading
Ray Jacobs (left) hands over his gillnet to Janelle Chanona, Oceana’s Vice President in Belize. Also pictured is Fidel Audinett (center), a Belizean fisher who had been petitioning the government to ban gillnets since 1997. Photo Credit: © Oceana/Alex Ellis
Wonderful news out of Belize!
For a country that’s slightly smaller than the U.S. state of Massachusetts, Belize boasts an inordinate number of ocean wonders. It’s home to the world’s second longest barrier reef, which Charles Darwin once described as “the most remarkable reef in the West Indies.” Here, you’ll find more than 500 unique fish species – enough to give every Belizean island its own mascot and still have about 50 left over.
Because this little Caribbean country has a lot worth protecting, it has enacted some of the strongest ocean conservation laws in the world – and they just got even stronger. Following hard-fought victories that banned all trawling and offshore oil drilling in Belize’s waters, the country has now outlawed gillnets, a fishing gear that kills turtles, manatees, and many other marine animals.
In addition to implementing a nationwide gillnet ban, the Belizean government signed an agreement with Oceana and the Coalition for Sustainable Fisheries to help licensed gillnet fishers transition to other jobs. As a result, Belizean resources and livelihoods will be protected well into the future.
As Janelle Chanona, Oceana’s head in Belize, put it: “This is a historic moment for Belize, her people, the Caribbean Sea and, most importantly, for everyone who depends on the country’s marine resources for their livelihoods.” Continue reading
Members of a team calling itself “the Brigade” work to repair hurricane-damaged corals off the coast of Mexico.
An inspiring example of collaborative efforts that bring environmentalists and the insurance industry together to protect fragile marine ecosystems.
In an unusual experiment, a coral reef in Mexico is now insured against hurricanes. A team of locals known as “the Brigade” rushed to repair the devastated corals, piece by piece.
When Hurricane Delta hit Puerto Morelos, Mexico, in October, a team known as the Brigade waited anxiously for the sea to quiet. The group, an assortment of tour guides, diving instructors, park rangers, fishermen and researchers, needed to get in the water as soon as possible. The coral reef that protects their town — an undersea forest of living limestone branches that blunted the storm’s destructive power — had taken a beating.
Now it was their turn to help the reef, and they didn’t have much time.
“We’re like paramedics,” said María del Carmen García Rivas, director of the national park that manages the reef and a leader of the Brigade. When broken corals roll around and get buried in the sand, they soon die. But pieces can be saved if they are fastened back onto the reef.
“The more days that pass, the less chance they have of survival,” she said.
The race to repair the reef is more than an ecological fight; it’s also a radical experiment in finance. The reef could be the first natural structure in the world with its own insurance policy, according to environmental groups and insurance companies. And Hurricane Delta’s force triggered the first payout — about $850,000 to be used for the reef’s repairs.
The success or failure of this experiment could determine whether communities around the world start using a new tool that marries nature and finance to protect against the effects of climate change. The response to Delta was a first test. Continue reading
Research has found that sustainably managed oceans can provide six times more food than today. Photograph: Lisa Maree Williams/Getty Images
It is too few countries protecting too little ocean space, but it is a step in the right direction:
Governments to reduce pollution in oceans and end subsidies that contribute to overfishing
Governments responsible for 40% of the world’s coastlines have pledged to end overfishing, restore dwindling fish populations and stop the flow of plastic pollution into the seas in the next 10 years.
The leaders of the 14 countries set out a series of commitments on Wednesday that mark the world’s biggest ocean sustainability initiative, in the absence of a fully fledged UN treaty on marine life.
The countries – Australia, Canada, Chile, Fiji, Ghana, Indonesia, Jamaica, Japan, Kenya, Mexico, Namibia, Norway, Palau and Portugal – will end harmful subsidies that contribute to overfishing, a key demand of campaigners. They will also aim to eliminate illegal fishing through better enforcement and management, and to minimise bycatch and discards, as well as implementing national fisheries plans based on scientific advice.
Each of the countries, members of the High Level Panel for Sustainable Ocean Economy, has also pledged to ensure that all the areas of ocean within its own national jurisdiction – known as exclusive economic zones – are managed sustainably by 2025. That amounts to an area of ocean roughly the size of Africa. Continue reading
The marine sanctuary off Tristan da Cunha will be the fourth largest in the world. Photograph: Andy Schofield/RSPB/PA
The Guardian shares some welcome conservation news from a lesser-known bit of land surrounded by plenty water-based wildlife:
UK overseas territory Tristan da Cunha’s new marine protected area will be fourth largest sanctuary of its kind
Rockhopper penguins on Tristan da Cunha will be among a wealth of marine life to benefit. Photograph: Trevor Glass/RSPB/PA
A community of 250 people on one of the most remote inhabited islands on Earth has made a significant contribution to marine wildlife conservation by banning bottom-trawling fishing, deep-sea mining and other harmful activities from its waters.
The government of Tristan da Cunha, a volcanic archipelago in the south Atlantic and part of the UK’s overseas territories, has announced that almost 700,000 sq km of its waters will become a marine protected area (MPA), the fourth largest such sanctuary in the world. Continue reading
Seagrass beds off Virginia’s Eastern Shore went from barren sediment to abundant meadows in 20 years in the world’s largest restoration project. credit: JAY FLEMING
Thanks for Science News for this wonderful example of successful ecosystem restoration.
In the world’s largest seagrass restoration project, scientists have observed an ecosystem from birth to full flowering.
As part of a 20-plus-years project, researchers and volunteers spread more than 70 million eelgrass seeds over plots covering more than 200 hectares, just beyond the wide expanses of salt marsh off the southern end of Virginia’s Eastern Shore. Long-term monitoring of the restored seagrass beds reveals a remarkably hardy ecosystem that is trapping carbon and nitrogen that would otherwise contribute to global warming and pollution, the team reports October 7 in Science Advances. That success provides a glimmer of hope for the climate and for ecosystems, the researchers say.
The project, led by the Virginia Institute of Marine Science and The Nature Conservancy, has now grown to cover 3,612 hectares — and counting — in new seagrass beds. By comparison, the largest such project in Australia aims to restore 10 hectares of seagrass.
The results are “a game changer,” says Carlos Duarte. Continue reading
My Octopus Teacher is available on Netflix
I was not avoiding it, exactly, but by night time my attention span diminishes. From a reluctant start at 7:30pm yesterday, assuming I would fall asleep less than half way through, my absorption became total from the first minute and remained so until the end. It was a compelling conclusion to a very long day. Film reviews rarely appear here, but New Scientist gives me good reason to share more than my own opinion:
In many ways, the octopus is a tough proposition: a soft-bodied mollusc that carries the bulk of its brain in its arms, that can render itself solid without a skeleton or liquid despite its beak, that evolved separately from nearly every other organism on Earth. That otherness is at the heart of our fascination with octopuses: can we even aspire to understand something so foreign? A new Netflix documentary, My Octopus Teacher, follows one man’s attempt. Continue reading
When you genuinely smile and then recoil a moment later, you are responding to what this artist wants you to see and then understand. The animation is brilliant and its short message on how ocean litter/marine plastic is harming marine life is ominous. The Artist Statement that accompanies it is not required reading, but it is there for the taking:
Two years ago, an experience on a small island inTaiwan changed my life. It was the closest I’d lived to the sea, being only a ten minute drive away. Everyone can enjoy the beach with its white sand and turquoise ocean. At the time, I went snorkeling almost every week. Seeing such alluring tropical fish and coral reefs still lingers in my mind. However, I also cannot forget the scenes of tons of human waste lying around the shore as if it was a part of nature. Continue reading
The HMS Challenger set sail from England in 1872 and changed the course of scientific history (Credit: North Wind Picture Archives/Alamy)
Thanks to the BBC for reminding us of the value of such voyages in earlier centuries, and their contributions to science, among other things:
The 3.5-year voyage to the furthest corners of the globe reshaped marine science and permanently changed our relationship with the planet’s oceans.
During the four-year journey, the ship uncovered many new species and shaped our understanding of the seas (Credit: LeeYiuTung/Getty Images)
In the foyer of the National Oceanography Centre in Southampton, England, stands a ship’s painted figurehead. It towers well above head height and depicts an armoured knight with a silver chest plate, a raised visor and a thick handlebar moustache. The knight’s eyes have a faraway gaze in them – and well they might. This wooden statue is the sole remnant of a square-rigged ship that once embarked on a three-and-a-half-year voyage to the furthest corners of the globe, reshaping marine science, unearthing all manner of underwater oddities and permanently changing our relationship with the planet’s oceans. The vessel’s name was HMS Challenger. Continue reading