Image of the week: Marine algal bloom off the UK coast

Phytoplankton bloom

The image was captured by the OLCI instrument onboard one of the Copernicus Sentinel-3 satellites on 10 August 2025.

EUMETSAT operates the Copernicus Sentinel-3 satellites, in cooperation with ESA, and delivers the marine data on behalf of the European Union.

More info

Learn more about how algal blooms are monitored using Copernicus Sentinel-3 and other satellites.

Visualise a whole year of ocean colour data

Visualise Copernicus Sentinel-3 data with EUMETView or Sentinel-2 and -3 data with WEkEO

Access ocean data from EUMETSAT User Portal