Saving Seafood

A new job for sharks: Oceanographers improving climate forecasts

June 9, 2026 — A mighty predator of the sea, capable of traveling vast distances and diving thousands of feet deep, may become a valuable tool in helping forecast climate change.

In a new study, University of Miami Rosenstiel School researchers found that sensors usually attached to sharks to investigate their behavior can also allow scientists to track temperature changes in parts of the oceans often inaccessible to satellites and drifters pulled by currents. Using mako and blue sharks, among the most nomadic of sharks, scientists were able to fill in data gaps and improve some forecasts by as much as 40%.

”What we ended up seeing is what we’re calling model improvements in shallow areas, in the Slope Sea [in the Northwest Atlantic] and along the continental shelf,” said Laura McDonnell, lead author and now a researcher at the Woods Hole Oceanographic Institution.

Read the full article at WLRN

Severe U.S. drought undermined Gulf fisheries, raising food security concerns

March 18, 2026 — A severe and prolonged U.S. drought in the late 1980s played a central role in one of the largest fisheries declines ever recorded in the Gulf of Mexico, according to a new study published in Nature Communications.

The research, led by scientists at the University of Haifa and co-authored by Ben Kirtman, a climate scientist and dean of the University of Miami Rosenstiel School of Marine, Atmospheric and Earth Science, found that drought-driven reductions in Mississippi River flow sharply limited nutrient delivery to coastal waters.

“Our findings show that the fisheries collapse was not driven by fishing pressure alone,” said Igal Berenshtein, head of the Marine Ecology and Ocean Health Laboratory at the University of Haifa, and the study’s lead author. “The prolonged drought reduced river discharge and nutrient input to the Gulf, weakening phytoplankton production and primary productivity at the base of the food web. That disruption cascaded through the ecosystem, ultimately reducing fish biomass and fisheries yields.”

The study documented a roughly 42 percent drop in total fish biomass and a 34 percent decline in fisheries catch following the drought period. Nearly 90 percent of species groups examined showed decreases in biomass.

Read the full article at The University of Miami