Articles on Oceans

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A NOAA scientist takes a coral sample in the Galapagos Islands. The process does not injure the colony, which grows back. Atlantic Oceanographic and Meteorological Laboratory - NOAA

Galápagos corals show El Niño events are more extreme now than in past 1,000 years – here’s how my team made the discovery

Scientists went to the heart of the El Niño pattern to learn from living and fossil corals. The results show El Niño’s intensifying coincides with global warming.
Impact assessments, fisheries protections and species-at-risk legislation are not administrative inconveniences; they are safeguards designed to manage environmental risk before damage occurs. (Fengkai Liu/Unsplash)

Canada’s infrastructure projects could damage Pacific salmon habitats

Biodiversity policies fail because governments lack the safeguards, accountability mechanisms and political commitment needed to implement them consistently.
Sargassum littered beaches in Fort Lauderdale, Fla., in spring 2023, making a mess during spring break. Joe Raedle/Getty Images

Sargassum, the smelly nemesis of beach vacations, has become a self‑sustaining disaster that will keep coming back

Communities and entrepreneurs are experimenting with ways to turn this nuisance into a valuable resource.
The hammerhead shark is one of the most ancient marine species on the planet, and it is very common along the Brazilian coast. Martin Prochazkacz/Shutterstock

Scientists find antidepressant in the brains of sharks off the coast of Rio de Janeiro

Scientists have identified sertraline — the active ingredient in Zoloft and dozens of other antidepressants — in the brain tissue of hammerhead sharks caught off the coast of Rio de Janeiro.

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