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_2024-03-08 database now available

Sunday, 10 March 2024

The new version of the MEOP-CTD database is now available. The MEOP-CTD database version 2024-03-08 is a major update on the previous version, with more than 150,000 new profiles. The number of CTD profiles is now exceeding 800,000.

As in the previous version, the post-processing includes all the features presented in 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. 

The code used to process the data is available on a public GitHub repository.

In parallel, the AniBOS network, an emerging GOOS network endorsed as an Ocean Decade Action, is pursuing its work toward a better integration of animal-borne sensors into the Global Ocean Observing System.

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