Marine Mammals Exploring the Oceans Pole to Pole

When diving animals help us to observe the oceans

Over 800,000 vertical profiles of Temperature and Salinity have been collected since 2004 in the World Ocean by attaching tags on marine mammals, such as Southern elephant seals.

In this website, you will find information about the marine mammal tagging programs, and an access point to the publicly available databases.

Please let us know if you are using our data. You can contact us by mail to if you have any question.

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The MEOP-CTD_2021-11-26 database now available

Thursday, 25 November 2021

After a long (long) wait, the new version of the MEOP-CTD database has finally arrived. The MEOP-CTD database version 2021-11-26 is a major update on the previous version:

The post-processing now includes all the features presented in the publication by Siegelman et al., 2019, with in particular  the removal of density inversion and a correction for the thermal cell effects. Check out the page on Data processing for more information. 

Also, there is of course more recent data in the new release, and the number of CTD profiles is now exceeding 600,000. 

Finally, an enormous work has been done to transition the processing from Matlab to python. The code is available on a public GitHub repository. This should help scaling up the data flow in the future, and we expect this means that the MEOP database is about to expand dramatically in the next few months. Stay tuned to hear more about it when it happens.

In parallel, we are working hard on the new AniBOS network, which represents the future of MEOP. This emerging GOOS network has just been endorsed as an Ocean Decade Action, recognizing the value of animal-borne ocean sensors for the observation of the physical and biological ocean. A community paper led by Clive McMahon and myself and describing our vision and plans has just been published in Frontiers.

To follow us, subscribe to the MEOP page on ResearchGate or to the AniBOS twitter account.