Join seafarers in the global scientific experiment to study marine phytoplankton. The phytoplankton underpin the marine food chain, so we need to know as much about them as possible. To participate in this project, you'll need to create a Secchi Disk, a tool that measures water turbidity, and use the free iPhone or Android ‘Secchi’ application. You can take a Secchi Disk reading as often as you wish, every day, once a week, twice a month, or just occasionally. The data you collect will help scientists around the world to understand the phytoplankton. Join in and help make this the world’s largest public marine biological study.
Become a SciStarter Ambassador!
SciStarter Ambassador badge logo

Applications for Cohort 3 are still open!

Libraries and community organizations need your help to spark excitement for citizen science and keep the momentum going!

The SciStarter Ambassador Program offers FREE training to volunteers ready to make an impact in their communities.

Ready to make a difference? Complete your application by January 25th to join the movement!