Water Color

A Sea Aswirl With Chlorophyll
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A Sea Aswirl With Chlorophyll

One of NASA’s newest Earth-observing sensors extends and improves the continuous measurement of light-harvesting pigments in ocean surface waters.

Published Aug 22, 2025

Image of the Day Water Water Color

Brilliant Bloom in the Baltic Sea
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Brilliant Bloom in the Baltic Sea

An explosion in the numbers of cyanobacteria transformed the Baltic Sea into a swirling canvas of green in summer 2025.

Published Jul 22, 2025

Image of the Day Atmosphere Water Water Color

Blooming British Isles
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Blooming British Isles

The colorful North Atlantic waters visible around the archipelago in April 2025 are likely due to a mix of phytoplankton and suspended sediment.

Published Apr 10, 2025

Image of the Day Water Water Color

A Swirl of a Day for Phytoplankton
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A Swirl of a Day for Phytoplankton

In the Gulf of Oman, eddies drew seasonal phytoplankton blooms into mesmerizing whirls. 

Published Mar 25, 2025

Image of the Day Remote Sensing Water Color

Signs of Life in Thawing Lake Erie
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Signs of Life in Thawing Lake Erie

As winter turned to spring, ice cover on the lake diminished to reveal colorful billows of sediment and phytoplankton.

Published Mar 20, 2025

Image of the Day Water Snow and Ice Water Color