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plankton

Microscopic marine algae known as coccolithophores covered in calcium carbonate shells.
Posted inResearch Spotlights

How a Move to the Shallows 300,000 Years Ago Drove a Phytoplankton Bloom

by Nathaniel Scharping 5 January 20265 January 2026

And what that could mean for today’s ocean.

Contra un fondo gris, hebras de organismos verdes multicelulares brillan bajo una luz artificial.
Posted inNews

Las olas de calor marinas lentifican el flujo de carbono de los océanos

by Mack Baysinger 5 January 20265 January 2026

Cuando el plancton se encuentra en agua caliente, la materia orgánica se estanca en la superficie e interrumpe el transporte de carbono hacia el fondo océanico.

A backward C-shaped swirl of milky blues and greens appears against a deep blue background. In the foreground, toward the edges of the image, clouds appear as white patches.
Posted inResearch Spotlights

Wintertime Spike in Oceanic Iron Levels Detected near Hawaii

Sarah Stanley, Science Writer by Sarah Stanley 11 December 202511 December 2025

Seasonal rainfall and runoff of sediments from the Hawaiian Islands could be responsible for the previously undetected peak.

Aialik Glacier makes a big splash as it calves into the water at Alaska’s Kenai Fjords National Park.
Posted inNews

Glacier Runoff Becomes Less Nutritious as Glaciers Retreat

Javier Barbuzano, Science Writer by Javier Barbuzano 25 November 202525 November 2025

Sediment from retreating, land-terminating glaciers contains proportionally fewer micronutrients such as iron and manganese, reducing the glaciers’ value to microorganisms at the base of the food web.

A drone image of a piece of mountainous land jutting out into the blue ocean.
Posted inResearch Spotlights

How Algae Helped Some Life Outlast Extinction

by Rebecca Owen 13 November 202513 November 2025

Cooler waters near Norway’s north provided a refuge for phytoplankton during the Great Dying, a new study suggests.

Against a gray background, strands of multicellular green organisms glow in artificial light.
Posted inNews

Marine Heat Waves Slow the Ocean’s Carbon Flow

by Mack Baysinger 3 November 20255 January 2026

When plankton find themselves in hot water, organic matters stalls at the surface and disrupts transport of carbon to the deep ocean.

在显微镜下,一系列形状,包括圆形、矩形和圆角菱形,在黑色背景下发出蓝色和黄色光芒。
Posted inResearch Spotlights

南极洲附近神秘的明亮水域解密

Sarah Stanley, Science Writer by Sarah Stanley 18 September 202518 September 2025

南大洋的一个偏远海域因壳状硅藻的光泽而在卫星图像中呈现出格外明亮的反光效果。

Two people in kayak in icy water. A large iceberg is behind them.
Posted inResearch Spotlights

Underwater Glacier-Guarding Walls Could Have Unintended Consequences

by Saima May Sidik 12 September 202512 September 2025

Although they would likely impede the warm currents that melt glaciers, such walls would also likely block fish migration and nutrient upwelling, harming marine ecosystems and Greenland fisheries.

A series of shapes, including circles, rectangles, and rounded diamonds, glow blue and yellow against a black background under a microscope.
Posted inResearch Spotlights

Mysteriously Bright Waters near Antarctica Explained

Sarah Stanley, Science Writer by Sarah Stanley 12 September 202518 September 2025

Shiny-shelled diatoms make a remote part of the Southern Ocean appear especially reflective in satellite imagery.

Satellite image of green swirls in blue water next to a snow-covered coast
Posted inNews

Iron Emissions Are Shifting a North Pacific Plankton Bloom

by Mark DeGraff 6 August 20256 August 2025

Some of the iron emitted by industrial activity in East Asia is carried by winds into the North Pacific, where it nourishes iron-hungry phytoplankton.

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A view of a bridge, with the New Orleans skyline visible in the distance between the bridge and the water. A purple tint, a teal curved line representing a river, and the text “#AGU25 coverage from Eos” overlie the photo.

Features from AGU Publications

Research Spotlights

What Could Happen to the Ocean’s Carbon If AMOC Collapses

6 January 20266 January 2026
Editors' Highlights

Frictional Properties of the Nankai Accretionary Prism

11 December 20259 December 2025
Editors' Vox

Hydrothermal Circulation and Its Impact on the Earth System

3 December 20253 December 2025
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