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Map of holes cored at Site U1385 since 2022. Credit: IODP

Earlier this week, Expedition 401 drilled the 12th hole at Site U1385 in the North Atlantic. That means this is hole is called Hole U1385L, because “L” is the twelfth letter of the alphabet and holes are named for consecutive letters. While Expedition 401 didn’t drill all of these, it continues on the lettering and legacy of the missions that came before it.

Numerous holes are drilled at the same site for a variety of reasons. For example, it can provide more samples of the target age range of rock or uncover a period of the record that was missed in the first holes. Returning to an existing site also provides some knowns. You can learn from past expeditions what types of drilling work best at that location and what challenges exist beneath the surface.

The JOIDES Resolution has returned to Site U1385 to drill deeper at this site than any past expeditions. Expedition 397 was the last to visit Site U1385 in 2022, but had to leave to get to their last site before hitting Expedition 401’s age of interest. Holes K and L provide a record at this site beyond 5 million years.

But this got our scientists wondering, which expedition holds the record for drilling the most holes at one site?

We checked in with Expedition 401 Curatorial Specialist Carel Lewis for the answer.

Leg 158, TAG Hydrothermal Mound

T-shirt logo for Leg 158. Credit: ODP

Sailed in 1994, Ocean Drilling Program (ODP) Leg 158 still holds the record for the most holes drilled at one site three decades later. Expedition 345 to Hess Deep came close in 2013, with one hole fewer.

The goal of the mission was to analyze the formation of mineral deposits more than two miles below the ocean’s surface at a hydrothermal mound in the Atlantic Ocean. Since their focus was on one specific location, the Trans-Atlantic Geotraverse hydrothermal mound, all of the holes from the expedition were drilled at this one site.

This is part of what caused the expedition to reach a record hole “Q,” drilling 17 separate holes at this one location.

After the expedition, co-chief Dr. Peter Herzig told the Ocean Drilling Program (ODP) that the samples and data collected from the leg represented a significant step forward in our understanding of how some of the large base metal ore deposits on land were formed at the seafloor.

“We have learned how complex these seafloor mineral deposits are and we begin to realize that the activity of those ore factories in the deep sea must have a considerable impact on the composition of both seawater and the oceanic crust,” said Herzig.

While Expedition 401 isn’t setting a record with Hole U1385L, but its data will make an important contribution to an understanding of the history of the Atlantic, as well as the Mediterranean.

Reaching Hole L

Ocean Acidification

The Latest Offshore Oil and Gas Policies that Threaten Our Ocean

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Offshore oil drilling is a dirty, risky endeavor.

The Deepwater Horizon disaster is perhaps the most dramatic example of how offshore drilling can go wrong. Fifteen years ago this month, the Deepwater Horizon oil rig exploded approximately 40 miles off the coast of Louisiana, taking the lives of 11 oil workers and causing the release of an estimated 210 million gallons of oil into the ocean.

Even when offshore oil operations go as planned, they harm our ocean by causing chronic water and air pollution, littering the seafloor with disused pipelines, and contributing to harmful emissions that worsen the impacts of climate change.

Despite these well-known risks and dangers, the administration and pro-oil members of Congress are moving swiftly to open more areas of our ocean to offshore drilling and remove regulations and policies that protect marine life, promote safety and discourage harmful greenhouse gas emissions.

Between the speed and and volume of actions the administration has taken, it can be easy to miss the threats on offshore oil and gas drilling specifically. Let’s break it down:

On day one of his second term, President Trump moved to open vast areas of our ocean to offshore oil and gas leasing and drilling. President Trump signed two executive orders that purported to open huge swaths of our ocean to offshore oil and gas leasing, including waters off the Atlantic and Pacific coasts, in the Northern Bering Sea, and in the Beaufort and Chukchi seas of the Arctic Ocean. Previous presidents had placed these areas off-limits to oil and gas leasing, and it is not clear whether the administration has the legal authority to rescind those protections.

Following this executive action, the new Secretary of the Interior issued orders that set the stage for a series of pro-oil policy and regulatory changes. Shortly after assuming office, Secretary of the Interior Doug Burgum issued a Secretarial Order requiring agencies under his authority to develop plans to “suspend, revise, or rescind” key programs, regulations and policies. The Secretarial Order puts in jeopardy policies designed to reduce risk to marine life, decrease the government’s exposure to financial risk and increase the safety of offshore operations, including:

  • Permits that require mitigation measures designed to protect threatened and endangered species in waters where most offshore oil and gas activity takes place.
  • Regulations that help ensure the owners of offshore oil and gas leases have the financial resources necessary to clean up their equipment after they finish their oil and gas operations.
  • Safety regulations designed to minimize the risk of dangerous blowouts and other “loss of well control” incidents.
  • The current nationwide five-year offshore leasing program that limits potential new offshore oil and gas leasing to just three lease sales between 2024 and 2029—a record low number.

Pro-oil members of Congress are also taking or considering steps to encourage and expedite offshore drilling. Because of the filibuster, a 60-vote supermajority is required to pass most legislation in the U.S. Senate. However, certain types of legislation—including the budget reconciliation process and legislation passed under the Congressional Review Act—require only a bare majority for passage. Pro-oil members of Congress are taking advantage of these special legislative processes to attempt to push through legislation that favors offshore drilling.

Offshore drilling

  • Members of Congress have discussed using the budget reconciliation process to pass legislation that would require the government to hold new offshore oil and gas lease sales in specific areas of the ocean. If existing executive-branch safeguards conflict with future legislatively mandated offshore oil and gas lease sales, the legislatively mandated lease sales would likely prevail. 
  • Under the Congressional Review Act, the House and Senate  passed legislation to undo a regulation that imposed a fee on emission of methane—a powerful greenhouse gas—from oil and gas production facilities, including some offshore facilities. They also passed legislation to repeal Department of the Interior regulations designed to better protect archaeological resources from impacts caused by offshore oil and gas drilling. President Trump signed both bills into law in mid-March.

These actions represent real threats to our ocean, the people and marine life that depend on it and on our global climate.

At Ocean Conservancy, we actively oppose these short-sighted and dangerous attempts to expand offshore oil drilling, remove environmental protections and reduce safety standards. The United States and the world must move away from risky and dangerous offshore drilling and toward 100% clean-ocean energy. We will continue to work with our partners, members and supporters to accelerate the phase-out of offshore oil and gas, advance responsible offshore wind and other marine renewable energy, address the root causes of climate change, and protect our ocean and the people and marine life that depend on it. Take action with Ocean Conservancy and join the movement to protect our ocean, forever and for everyone.

The post The Latest Offshore Oil and Gas Policies that Threaten Our Ocean appeared first on Ocean Conservancy.

The Latest Offshore Oil and Gas Policies that Threaten Our Ocean

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Ocean Acidification

Master of Disguise: The Decorator Crab

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Imagine yourself snorkeling through a lush kelp forest off the coast of Southern California. Sunlight filters through the dense canopy of the forest, casting shimmering patterns on the rocky seafloor below. The underwater world appears peaceful and still—until your gaze falls on what seems to be an ordinary-looking rock.

Then… the rock moves.

At first, you assume it’s just the ocean’s current shifting the rock. But as you take a closer look, you realize it’s not a rock at all. It seems to be a crab, expertly hidden with bits of algae from its surroundings. Meet the decorator crab: a master of disguise and possibly the most stylish and secretive crab in our ocean.

What are decorator crabs?

Decorator crabs constitute several species of crabs that belong to the superfamily Majoidea, a group of crustaceans with a remarkable talent for camouflage. They use tiny, hook-like structures on their shells to attach pieces of algae, seaweed and other marine debris onto their bodies. But this isn’t just a quirky fashion statement—these natural accessories help decorator crabs avoid predators, like pacific halibut, octopuses and sea otters, by blending in with their surrounds. 

If they move to a new environment, decorator crabs will adapt their wardrobe to match. Some take their disguises a step further, attaching living organisms like sponges and venomous anemones to their carapaces—the hard upper shell that protects the crab’s vital organs. This not only helps the crabs blend in but also offers an extra layer of defense. Even when they shed their exoskeleton in a process called molting, some crabs will carefully transfer their decorations to their fresh shell.

Decorator Crab

You can also identify decorator crabs because they are decapods, meaning they have ten legs—two pinchers for feeding and four additional pairs of legs for walking. Decorator crabs are primarily omnivores and use their pinchers to pluck small algae out of crevices and off the sea floor. 

Decorator crabs are solitary animals for most of the year outside of mating season from May to September. You’ll find decorator crabs in shallow coastal waters around the world, from coral reefs and rocky shorelines to kelp forests, seagrass beds and tidal pools. You may have to keep a close eye out for decorator crabs, though, as their average size is only three to five inches across their leg span.

How can you help decorator crabs?

While decorator crabs aren’t currently endangered, they depend on a thriving ocean to survive. Like all marine life, they face threats from pollution, habitat destruction and climate change. Protecting our ocean means protecting creatures like them.

Ocean Conservancy is dedicated to safeguarding our ocean from today’s greatest challenges, from plastic pollution to climate change. But we can’t do it alone. Visit the Ocean Conservancy Action Center to learn how you can help defend our ocean, its wildlife and the communities that depend on it.

The post Master of Disguise: The Decorator Crab appeared first on Ocean Conservancy.

Master of Disguise: The Decorator Crab

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Ocean Acidification

Indigenous Cultures and Environmental Management

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Barbara ‘Wáahlaal Gidaak Blake is the Vice President for Ocean Conservancy, leading the Arctic & Northern Waters Program. A dedicated advocate for Indigenous rights and environmental stewardship, she has an extensive background in Alaska Native policy and governance, having served in key leadership roles at the state and tribal levels. With deep roots in Haida, Tlingit, and Ahtna Athabascan heritage, she is a passionate cultural practitioner and a committed leader.

Our food is so much more than calories and nutrients. Our favorite dishes connect us to people, places and times that matter in our lives. For Alaska Native Peoples, our traditional foods do all this and more. For us, food is not just a matter of what we eat, but also the ways we gather that food, the ways we store and prepare it, and the milestones in our lives that center around food. It connects us to our ancestors, demonstrates a balance of care for our non-human beings (our kin in the natural world) and is our connection to our spirituality in maintaining that balance.

Image Descriptions

Image 1: K’alaagáa Íihlangaa (Nathaniel) Blake harvesting salmon along a river in Dzantik’i Héeni (Juneau), Alaska.

Image 2: K’alaagáa Íihlangaa (Nathaniel) Blake receiving a Halibut Hook and listening to Tlingit teachings from his uncle Xeetli.éesh (Lyle) James. Xeetli.éesh was one of many leaders who stood to acknowledge this moment and gift knowledge and tools to aid K’alaagáa Íihlangaa as he grows in the responsibility to care and provide for his community.

Image 3: K’alaagáa Íihlangaa (Nathaniel) Blake, learning from his great great uncle, Dennis Demmert, how to clean, filet, and prepare a salmon.

Our ability to carry on our ways, to sustain the cultures and knowledge that have existed for countless generations, is too often minimized if not directly threatened by today’s systems of managing lands, waters, hunting, fishing and gathering. Understandably, caring for and stewarding our lands, waters and non-human relatives requires a holistic approach that honors the interconnectedness of the natural web of life. Keeping plant and animal populations healthy is an essential foundation for human life. Economics also factors in: What value do we gain from a healthy environment and what is the cost of keeping it that way? Culture, however, is all too often ignored.

In a recently published essay, Ocean Conservancy staff joined several Alaska Native authors and researchers who have long worked with Alaska Native communities, to explore what it would mean to place Indigenous cultures at the heart of wildlife and fisheries management. This is not to ignore ecology and economics, but simply to recognize that among many possible decisions, only some have the effect of supporting Indigenous cultural vitality and continuity. In other words, we have choices about who can harvest fish and animals, who can access lands and waters. Those choices matter. It is also a reminder that as we center the continuity of cultural relationships with the natural world, we are protecting the entire web for all who depend on continued harvesting for their ways of life.


KI harvesting tea

K’alaagáa Íihlangaa (Nathaniel) Blake harvesting Gagán xil (Labrador tea) with his mother, grandmother, and little sister.

Long-term solutions require lasting, respectful relationships with our surroundings and all those with whom we share our planet. Indigenous Peoples have demonstrated what it takes to create and sustain those relationships for centuries and millennia. Today, more than ever, we need to pay close attention to those hard-won lessons. Making choices that celebrate and uplift cultural practices of Indigenous peoples is the best place to start. This approach is central to Ocean Conservancy’s Arctic and Northern Waters conservation work. Please join us in sharing these ideas with all who care about the future of our ocean.

The post Indigenous Cultures and Environmental Management appeared first on Ocean Conservancy.

Indigenous Cultures and Environmental Management

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