Ocean upwells from climate change prove fatal for marine life

A new study reveals that the escalation of cold ocean upwellings due to climate change is leading to mass fatalities among marine species, including sharks and rays.

Jonathan Watts reports for The Guardian.


In short:

  • Researchers have linked shifts in ocean currents and atmospheric conditions to an increase in deadly cold upwellings, primarily affecting tropical marine species.
  • A specific incident off South Africa in 2021 involved a mass die-off of over 260 marine organisms from 81 species, dramatically illustrating the impact of these sudden temperature drops.
  • Affected animals, including a tagged bull shark, displayed altered behaviors like swimming closer to the surface and deviating from typical migration routes in failed attempts to escape the cold.

Key quote:

"It was eerie to see so many species washed up dead."

— Ryan Daly, marine biologist

Why this matters:

Altered upwelling patterns may worsen existing stressors on marine ecosystems, such as ocean acidification and hypoxia. These conditions can impair the ability of marine organisms to build shells and skeletons, as well as reduce oxygen availability, further threatening the health and resilience of marine ecosystems.

Ocean heat waves, which can push out fish, plankton and other aquatic life, are happening far more frequently than previously thought.

youth climate activism
Credit: throgers/Flickr

The court orders dismissal of a youth-led climate lawsuit against the US government

A federal appeals court has instructed the district court to dismiss a climate change lawsuit filed by youth plaintiffs against the U.S. government, denying them the chance to amend their case.

Alex Guillén reports for Politico.

Keep reading...Show less
Senator Whitehouse & climate change

Senator Whitehouse puts climate change on budget committee’s agenda

For more than a decade, Senator Sheldon Whitehouse gave daily warnings about the mounting threat of climate change. Now he has a powerful new perch.
Amid LNG’s Gulf Coast expansion, community hopes to stand in its way
Coast Guard inspects Cameron LNG Facility in preparation for first LNG export in 2019. (Credit: Coast Guard News)

Amid LNG’s Gulf Coast expansion, community hopes to stand in its way

This 2-part series was co-produced by Environmental Health News and the journalism non-profit Economic Hardship Reporting Project. See part 1 here.Este ensayo también está disponible en español
Keep reading...Show less
genetic response climate adaptations
Credit: Wendy Miller/Flickr

New studies reveal genetic adaptations in California birds

Two studies reveal how genetic changes in bird populations in California respond to environmental threats, highlighting the potential for adaptation and the risks of genetic dilution.

Rebecca Heisman reports for The Revelator.

Keep reading...Show less

EPA introduces new rules for legacy coal ash pond cleanup

New regulations released by the U.S. Environmental Protection Agency aim to tackle the cleanup of legacy coal ash ponds, requiring stringent measures to prevent groundwater contamination.

Gautama Mehta reports for Grist.

Keep reading...Show less

NBA sets ambitious climate goals, aiming for major carbon footprint reduction by 2030

The NBA commits to cutting its carbon emissions by half within the next six years, leveraging its global influence and internal initiatives.

Jacob Uitti reports for The Guardian.

Keep reading...Show less
Big Oil climate disinformation
Credit: Peter Massas/Flickr

Big oil spent decades sowing doubt about fossil fuel dangers, experts testify

Experts and lawmakers, during a Senate hearing, revealed a strategic shift by the fossil fuel industry from outright climate denial to more sophisticated disinformation campaigns aimed at protecting profits while undermining climate policy.

Dharna Noor reports for The Guardian.

Keep reading...Show less
land use sustainable agriculture
Credit: Mizzou CAFNR/Flickr

New ideas shed light on addressing climate issues

Environmental scientist Hannah Ritchie discusses how technological advances could lead to a more sustainable future in the face of climate challenges.

Ezra Klein reports for The New York Times.

Keep reading...Show less
From our Newsroom
youth climate change

"Our lives might be on the line"

Eighth graders reflect on the state of the planet.

sargassum

After 13 years, no end in sight for Caribbean sargassum invasion

Thousands of people were hurt by sargassum blooms last year in the Caribbean.

youth climate change

“We should take care of what is precious to us"

Eighth graders reflect on the state of the planet.

earth day 2024

Earth Day reflections from the next generation

This week we're featuring essays from Houston-area eighth graders to hear what the youth think about the state of our planet.

New EPA regulations mean a closer eye on the nation’s petrochemical hub

New EPA regulations mean a closer eye on the nation’s petrochemical hub

Houston’s fenceline communities welcome stricter federal rules on chemical plant emissions but worry about state compliance.

Stay informed: sign up for The Daily Climate newsletter
Top news on climate impacts, solutions, politics, drivers. Delivered to your inbox week days.