Saving Seafood

How Will El Niño Affect Your Local Fisheries?

October 8, 2026 — What does El Niño mean for U.S. fisheries and marine life? What can fishermen and coastal communities expect to observe and experience as this event continues and potentially intensifies? And what are scientists at NOAA Fisheries doing to track this natural phenomenon?

The El Niño-Southern Oscillation is a powerful atmospheric cycle that occurs in the Pacific Ocean along the Equator and weakens trade winds that blow from east to west. This allows warm surface water in the Pacific to slosh back east towards the Americas. It reduces the amount of cold water upwelling that usually occurs off the coast of South America. This natural phenomenon can have intense atmospheric and oceanographic effects, such as increased precipitation, flooding, and warmer ocean temperatures. These impacts vary by geographic location but are typically felt most directly by regions within the Pacific Basin.

In June 2026, NOAA forecasters announced that El Niño had formed in the tropical Pacific. As of October, they have predicted a greater than 83 percent chance of a “very strong event” during the Northern Hemisphere fall and winter 2026–27. Experts expect this event will persist through early spring 2027, with the potential for observable impacts in marine ecosystems for months or even years afterwards.

Scientists still can’t predict exactly what will occur during this period. But NOAA Fisheries can draw upon historic observations and an abundance of data collected throughout previous El Niño events to suggest likely impacts across our ecosystems. Additionally, we are actively deploying tools and strategies to monitor and predict El Niño’s impact on the marine environment across the United States, including:

Learn more about what you can expect from this El Niño event and what NOAA Fisheries is doing to forecast and document its impacts.

Read the full article at NOAA Fisheries

Ocean’s Oxygen Starts Running Low

May 3, 2016 — Climate change is doing more than warming the world’s oceans. It’s also making it harder for marine life to breathe.

Curtis Deutsch, associate professor at the University of Washington’s School of Oceanography, studies how increasing global temperatures are altering the levels of dissolved oxygen in the world’s oceans. Scientists have been warning that decreasing amounts of available oxygen will increase stress on a range of species, even as they also face the effects of rising temperatures and ocean acidification.

Deutsch’s latest research is untangling how much oxygen loss is linked to climate change and how much is due to normal variation in oxygen levels.

“As the climate goes up, the amount of oxygen will go down, but it’s really hard to look in the ocean to see that change,” he said.

Using an earth system modeling approach, Deutsch and scientists at the National Center for Atmospheric Research and the Georgia Institute of Technology mapped out changing oxygen levels across the world’s oceans through the end of the 21st century.

They found that it was possible to distinguish the impact of global warming from other sources of oxygen loss. As soon as 2030 to 2040, climate-driven declines in oxygen levels will be detectable in oceans all over the globe. In some places, like the southern Indian Ocean and parts of the eastern tropical Pacific and Atlantic basins, evidence of climate-linked deoxygenation is already apparent, while other regions won’t see changes by 2100.

Read the full story from Scientific American