Building on a decade-long census of marine life, these powerful tools provide quantitative baselines of biodiversity at the regional and global level.

UNESCO: OFFICE IN BRASILIA

The film is based on the results of a large-scale research programme on the oceans, called Census of Marine Life, whose main findings will be presented at the conference.

UNESCO: MEDIA SERVICES

The Census of Marine Life reported that phytoplankton, the microscopic plants producing most of the oxygen from the oceans, have been declining by around 1% a year since 1900.

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"Anywhere you go and try to harvest fish with a trawl you are going to destroy any coral that lives there, and there is example after example of the damage that is done by trawlers, " says Ron O'Dor, a senior scientist on the Census of Marine Life.

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