June 22, 2026 — The 2026 Our Ocean Conference, held recently in Mombasa, Kenya, brought together over 100 governments, businesses, and civil society organizations and resulted in 320 new commitments valued at USD 6.4 billion (EUR 5.5 billion) to advance ocean conservation, sustainable fisheries, climate resilience, and blue economic ventures.
Commitments from the conference include work that will soon be done in French Polynesia, Canada, and Kenya.
June 19, 2026 — The Trump administration has reversed course on its effort to shut down a network of ocean research stations in the Pacific and Atlantic oceans.
The National Science Foundation on Thursday announced a halt to the dismantling of floating scientific observatories off Alaska, North Carolina, Oregon, Washington, and Greenland.
Researchers were offloading the last of the Ocean Observatories Initiative’s six high-tech data buoys from Pacific Northwest waters onto a flatbed truck in Newport, Oregon, Thursday morning when they got the word: The science foundation was turning the dismantling ship around.
“The U.S. National Science Foundation appreciates the concerns raised by the range of stakeholders that have informed us they rely on data from the Ocean Observatories Initiative (OOI),” the agency’s statement reads. “Effective immediately, NSF will not proceed with further removal or descoping of equipment from the remaining arrays and will continue operations including planned maintenance.”
June 19, 2026 — Perched on the bow of an aluminum landing craft, Anne Cohen gazed a few yards ahead of the vessel toward a yellow robot gliding across the emerald Majuro lagoon.
The unmanned surface vehicle, called Yellowfin, was quickly becoming one of the coral researcher’s most dependable guides in these Central Pacific waters.
“She’s the best dive buddy,” said Cohen, a tenured scientist at the Woods Hole Oceanographic Institution in Cape Cod. Programmed to navigate to a precise set of coordinates, the robot cut through small swells like a tiny sailboat without a mast, directing Cohen toward a destination she had traveled thousands of miles to revisit.
When the robot finally paused, hovering in place, Cohen recognized it as her cue. Somewhere below should be a patch of reef she’d been observing over the last few years, and she was eager to see how it was faring. Each visit carried a growing weight of uncertainty.
Since 2023, record-breaking marine heat waves have swept through the tropics, fueling the most severe global coral bleaching event ever recorded. More than 80 percent of the world’s reefs have been impacted in at least 83 countries and territories. Corals have been so stressed by the extreme temperatures, they’ve expelled the tiny algae living inside their tissues that provide them with food and their brilliant hues, leaving them pale, ghostly and struggling to survive. Many have not recovered.
June 19, 2026 — The Trump administration’s dismantling of an ocean monitoring system used for purposes such as ecosystem and climate monitoring has been put on hold after the U.S. Senate in a bipartisan vote Wednesday passed a measure blocking the plan, according to published reports.
June 19, 2026 — A critical deep ocean observation network that includes a long-standing station off the coast of Alaska has been saved from getting dismantled. As first reported by the New York Times, the Trump administration dropped its plan to get rid of the ocean and climate tracking system after the U.S. Senate unanimously blocked the move this week.
Alaska Sen. Lisa Murkowski and Oregon Sen. Jeff Merkley sponsored the measure, which prohibits the National Science Foundation from spending federal money to remove the equipment anchored off the coast of Alaska, Washington, Oregon, North Carolina and in an area called the Irminger Sea between Iceland and Greenland.
On the Senate floor Wednesday, Murkowski said the Ocean Observatories Initiative collects hard-to-access information that’s critical for understanding warming seas.
“This is all happening at a time when everybody’s talking about El Niño, and what that is going to bring in terms of the potential for extreme weather events,” Murkowski said. “This is not the time to be turning off one of our most valuable scientific assets.”
June 18, 2026 — The administration of U.S. President Donald Trump has walked back plans to dismantle a deep-ocean observation system after pushback from members of Congress.
The U.S. National Science Foundation (NSF) announced recently the administration was planning to dismantle the USD 368 million (EUR 321 million) Ocean Observatories Initiative (OOI). The OOI consisted of multiple underwater monitoring arrays, which provide openly accessible data to oceanographers, researchers, educators, and the public and contributed to everything from storm forecasting to fishery health.
June 17, 2026 — The forecasted El Niño—a mysterious but well-documented climate phenomenon—has officially begun, the National Oceanic and Atmospheric Administration (NOAA) announced on June 11. Meteorologists expect it to evolve into one of the most powerful ones on record, and the event will likely bring about extreme weather worldwide and consequently affect the economy.
“We need to prepare for a potentially strong El Niño event, which will exacerbate drought and heavy rainfall and increase the risk of heatwaves both on land and in the ocean,” says Celeste Saulo, secretary-general of the World Meteorological Organization, in a statement.
Here’s what you need to know about the El Niño and what it might do in the coming months.
What is El Niño?
El Niño is a naturally occurring climate pattern characterized by warmer-than-average surface water temperatures in the Pacific Ocean’s tropical region, near the equator. In the United States, the events are usually declared when the temperature rises by more than 0.9 degrees Fahrenheit for at least five consecutive seasons, each lasting three months.
The balmier water leads to changes in the air pressure. That, in turn, causes trade winds that blow westward to weaken, allowing warmer water to spread farther east than normal and pool near northwestern South America.
June 15, 2026 — A large marine heatwave has bathed parts of the West Coast in very warm ocean waters over the past year, breaking temperature records in the Pacific. NOAA has also announced that El Niño has developed in the tropical Pacific and is predicted to intensify to a moderate or strong level this fall. El Niño represents another form of marine warming , though with different drivers and influences. The prolonged period of high temperatures could affect fisheries and marine life in the California Current that have already been buffeted by shifting ocean conditions over the last decade.
One factor may help dampen the impacts, though: The same strong upwelling of cool water along the coast that fuels the West Coast ecosystem with nutrients could help keep some warmer waters at bay, as happened in 2025.
We have seen these back-to-back heat events before. About a decade ago, a major marine heatwave known as “The Blob” began raising ocean temperatures off the West Coast, peaking in 2015. One of the strongest El Niños on record followed in 2015–2016, amplifying ocean warmth—as the current forecast predicts for the coming year. That was a worst-case scenario that drove changes around the world. The Pacific endured a record count of tropical cyclones and the Caribbean Sea and parts of Africa experienced severe droughts. That situation was more extreme than now, with the Blob lasting longer and affecting the entire West Coast compared to the smaller recent marine heatwave. However, research and observations during that unprecedented climatic pileup suggest the kind of changes we may see in the coming months along the West Coast. Though these changes are centered in the Pacific, they have far-reaching impacts.
Here are some of the ways warming water can impact marine life, coastal communities, and economies.
Research found that some commercial West Coast species, such as market squid, may be sensitive to these long-term and episodic changes in ocean temperatures. The shift of market squid north along the West Coast in response to warming from the Blob and subsequent El Niño created new fishing opportunities in Oregon and Washington during the Blob that remained afterward. Squid landings in Oregon rose from none in 2015 to nearly 3 million pounds worth more than $1 million in 2016 and continued to grow rapidly through 2020. This provided new opportunities for purse seine vessels whose opportunities in other fisheries affected by the Blob—such as sardine, Alaska herring, and Alaska salmon—had dwindled. Seafood processors in Oregon scaled up to handle more squid, and Oregon fisheries managers developed their first regulations for the emerging squid fishery. Market squid had been the largest commercial fishery by volume in California, but California landings dropped by more than half from 2014 to 2015. They remain substantially lower than they were prior to the Blob and El Niño.
Meanwhile, tropical species such as whale sharks and hammerhead sharks made northerly appearances off Southern California while fishing vessels caught albacore tuna much closer to shore as far north as Washington. Fishing boats caught a skipjack tuna off the Copper River in Alaska, and surveys turned up an ocean sunfish and thresher shark off southeast Alaska. Pacific bluefin tuna increased in number and size in U.S. waters, exciting recreational anglers and generating new revenue for the charter fleet. This year, Southern California anglers have begun catching dorado and yellowfin tuna much earlier in the year than usual, suggesting these northerly shifts may have begun.
Higher sea surface temperatures also affect other fish species, including sardines and anchovy. These fish are high-energy staple foods for California sea lions that breed in Southern California’s Channel Islands, but declined with warming ocean temperatures. Sea lions turned to lower quality forage species such as rockfish and squid. Nursing sea lion mothers had to travel farther to find the food their pups needed, forcing pups to fast for longer periods at the rookery. The weight of sea lion pups declined, according to long-term studies in the Channel Islands . In El Niño years, many hungry pups set off on their own in search of food before their usual weaning time. In 2013–2016, as many as 4,000 pups arrived on California beaches, skinny and hungry. These extreme events taxed rehabilitation facilities and prompted NOAA Fisheries to declare an Unusual Mortality Event for the species. Researchers later estimated that an increase of 1 degree Celsius in sea surface temperatures could reduce the growth rate of the sea lion population to zero. A 2-degree rise would reduce the population size by about 7 percent.
June 15, 2026. — It’s official: El Niño is back. By late fall 2026, forecast models give a 2-in-3 chance of a strong-to-very strong El Niño affecting the weather, climate and ocean temperatures across the planet.
El Niño is the climate system’s biggest player and one side of the El Niño-Southern Oscillation, or ENSO. It’s the heads to La Niña’s tails.
During El Niño, a swath of ocean stretching 6,000 miles (about 10,000 kilometers) westward off the coast of Ecuador warms for months on end, typically by 2 to 4 degrees Fahrenheit (about 1 to 2 degrees Celsius). A few degrees may not seem like much, but in that part of the world, it’s more than enough to completely reorganize wind, rainfall and temperature patterns all over the planet.
I’m a climate scientist who studies the oceans. With an El Niño expected to strengthen through the summer and fall, water temperatures will heat up even more. It’s time to start preparing.
No two El Niño events are exactly alike, though we’ve seen enough of them that forecasters have a pretty good idea of what’s likely to happen.
People tend to focus on El Niño’s impact on land, justifiably. The warm water affects air currents that leave areas wetter or drier than usual. It can ramp up storms in some areas, like the southern U.S., while tending to tamp down Atlantic hurricane activity.
El Niño can also wreak havoc on the many marine ecosystems that support the world’s fishing industries, including coral reefs and seagrass meadows.
Specifically, El Niño tends to trigger intense and widespread periods of extreme ocean warming known as marine heat waves.
Global ocean temperatures are already near record highs, so El Niño-induced marine heat waves could push many sensitive fisheries to a breaking point.
June 12, 2026 — Prepare for intense heat, drought and some flooding — it’s officially El Niño season, the National Weather Service announced Thursday.
This El Niño event could be on par with some of the strongest documented in the past, according to models from the NWS.
“There is a 63% chance that we’re looking at a very strong El Niño during the November to January time period that could rank amongst the largest El Niño events in the historical record,” Ariel Cohen, a meteorologist for the NWS in Los Angeles, said at a news conference held by the Aquarium of the Pacific in Long Beach, California. “We’re already seeing those warm temperatures lining up.”
El Niño is a natural climate pattern that causes warm surface temperatures in the tropical Pacific Ocean. It’s associated with higher average global temperatures, so its effects exacerbate warming from climate change. The pattern is linked to fewer hurricanes in the Atlantic and more in the Pacific.
In the U.S., El Niño’s influence is most obvious in the winter, as it shifts the typical flow of the jet stream, the ribbon of air that encircles the Northern Hemisphere and drives weather patterns. The pattern typically pushes the jet stream south.
In the Pacific Northwest, that creates dry, warmer-than-usual conditions in winter, which is a concern this year because much of the region is already mired in drought after receiving middling snow. In Southern states, the trend typically brings unusually wet weather in the winter, which could prime the region for flooding.
El Niño can also drive powerful marine heat waves and scramble sea life, causing mass die-offs and bringing unusual tropical fish to coastal waters.
